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15 U.S.C. 1123 ; 35 U.S.C. 2(b)(2) .

57 FR 29642 , July 6, 1992, unless otherwise noted.

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Editorial note on subchapter a of chapter i, editorial note:.

Part 2 is placed in the separate grouping of parts pertaining to trademarks regulations.

PART 3—ASSIGNMENT, RECORDING AND RIGHTS OF ASSIGNEE

Editorial note.

Nomenclature changes to part 3 appear at 68 FR 14337 , Mar. 25, 2003.

§ 3.1 Definitions.

For purposes of this part, the following definitions shall apply:

Application means a national application for patent, an international patent application that designates the United States of America, an international design application that designates the United States of America, or an application to register a trademark under section 1 or 44 of the Trademark Act, 15 U.S.C. 1051 , or 15 U.S.C. 1126 , unless otherwise indicated.

Assignment means a transfer by a party of all or part of its right, title and interest in a patent, patent application, registered mark or a mark for which an application to register has been filed.

Document means a document which a party requests to be recorded in the Office pursuant to § 3.11 and which affects some interest in an application, patent, or registration.

Office means the United States Patent and Trademark Office.

Recorded document means a document which has been recorded in the Office pursuant to § 3.11 .

Registration means a trademark registration issued by the Office.

[ 69 FR 29878 , May 26, 2004, as amended at 80 FR 17969 , Apr. 2, 2015]

Documents Eligible for Recording

§ 3.11 documents which will be recorded..

( a ) Assignments of applications, patents, and registrations, and other documents relating to interests in patent applications and patents, accompanied by completed cover sheets as specified in § 3.28 and § 3.31 , will be recorded in the Office. Other documents, accompanied by completed cover sheets as specified in § 3.28 and § 3.31 , affecting title to applications, patents, or registrations, will be recorded as provided in this part or at the discretion of the Director.

( b ) Executive Order 9424 of February 18, 1944 ( 9 FR 1959 , 3 CFR 1943-1948 Comp., p. 303) requires the several departments and other executive agencies of the Government, including Government-owned or Government-controlled corporations, to forward promptly to the Director for recording all licenses, assignments, or other interests of the Government in or under patents or patent applications. Assignments and other documents affecting title to patents or patent applications and documents not affecting title to patents or patent applications required by Executive Order 9424 to be filed will be recorded as provided in this part.

( c ) A joint research agreement or an excerpt of a joint research agreement will also be recorded as provided in this part.

[ 62 FR 53202 , Oct. 10, 1997, as amended at 70 FR 1824 , Jan. 11, 2005; 70 FR 54267 , Sept. 14, 2005; 78 FR 62408 , Oct. 21, 2013]

§ 3.16 Assignability of trademarks prior to filing of an allegation of use.

Before an allegation of use under either 15 U.S.C. 1051(c) or 15 U.S.C. 1051(d) is filed, an applicant may only assign an application to register a mark under 15 U.S.C. 1051(b) to a successor to the applicant's business, or portion of the business to which the mark pertains, if that business is ongoing and existing.

[ 64 FR 48926 , Sept. 8, 1999]

Requirements for Recording

§ 3.21 identification of patents and patent applications..

An assignment relating to a patent must identify the patent by the patent number. An assignment relating to a national patent application must identify the national patent application by the application number (consisting of the series code and the serial number; e.g., 07/123,456). An assignment relating to an international patent application which designates the United States of America must identify the international application by the international application number; e.g., PCT/US2012/012345. An assignment relating to an international design application which designates the United States of America must identify the international design application by the international registration number or by the U.S. application number assigned to the international design application. If an assignment of a patent application filed under § 1.53(b) of this chapter is executed concurrently with, or subsequent to, the execution of the patent application, but before the patent application is filed, it must identify the patent application by the name of each inventor and the title of the invention so that there can be no mistake as to the patent application intended. If an assignment of a provisional application under § 1.53(c) of this chapter is executed before the provisional application is filed, it must identify the provisional application by the name of each inventor and the title of the invention so that there can be no mistake as to the provisional application intended.

[ 80 FR 17969 , Apr. 2, 2015]

§ 3.24 Requirements for documents and cover sheets relating to patents and patent applications.

( a ) For electronic submissions: Either a copy of the original document or an extract of the original document may be submitted for recording. All documents must be submitted as digitized images in Tagged Image File Format (TIFF) or another form as prescribed by the Director. When printed to a paper size of either 21.6 by 27.9 cm (8 1 ⁄ 2 by 11 inches) or 21.0 by 29.7 cm (DIN size A4), the document must be legible and a 2.5 cm (one-inch) margin must be present on all sides.

( b ) For paper or facsimile submissions: Either a copy of the original document or an extract of the original document must be submitted for recording. Only one side of each page may be used. The paper size must be either 21.6 by 27.9 cm (8 1 ⁄ 2 by 11 inches) or 21.0 by 29.7 cm (DIN size A4), and in either case, a 2.5 cm (one-inch) margin must be present on all sides. For paper submissions, the paper used should be flexible, strong white, non-shiny, and durable. The Office will not return recorded documents, so original documents must not be submitted for recording.

[ 69 FR 29879 , May 26, 2004]

§ 3.25 Recording requirements for trademark applications and registrations.

( a ) Documents affecting title. To record documents affecting title to a trademark application or registration, a legible cover sheet ( see § 3.31 ) and one of the following must be submitted:

( 1 ) A copy of the original document;

( 2 ) A copy of an extract from the document evidencing the effect on title; or

( 3 ) A statement signed by both the party conveying the interest and the party receiving the interest explaining how the conveyance affects title.

( b ) Name changes. Only a legible cover sheet is required ( See § 3.31 ).

( c ) All documents.

( 1 ) For electronic submissions: All documents must be submitted as digitized images in Tagged Image File Format (TIFF) or another form as prescribed by the Director. When printed to a paper size of either 21.6 by 27.9 cm (8 1 ⁄ 2 by 11 inches) or 21.0 by 29.7 cm (DIN size A4), a 2.5 cm (one-inch) margin must be present on all sides.

( 2 ) For paper or facsimile submissions: All documents should be submitted on white and non-shiny paper that is either 8 1 ⁄ 2 by 11 inches (21.6 by 27.9 cm) or DIN size A4 (21.0 by 29.7 cm) with a one-inch (2.5 cm) margin on all sides in either case. Only one side of each page may be used. The Office will not return recorded documents, so original documents should not be submitted for recording.

§ 3.26 English language requirement.

The Office will accept and record non-English language documents only if accompanied by an English translation signed by the individual making the translation.

[ 62 FR 53202 , Oct. 10, 1997]

§ 3.27 Mailing address for submitting documents to be recorded.

Documents and cover sheets submitted by mail for recordation should be addressed to Mail Stop Assignment Recordation Services, Director of the United States Patent and Trademark Office, P.O. Box 1450, Alexandria, Virginia 22313-1450, unless they are filed together with new applications.

§ 3.28 Requests for recording.

Each document submitted to the Office for recording must include a single cover sheet (as specified in § 3.31 ) referring either to those patent applications and patents, or to those trademark applications and registrations, against which the document is to be recorded. If a document to be recorded includes interests in, or transactions involving, both patents and trademarks, then separate patent and trademark cover sheets, each accompanied by a copy of the document to be recorded, must be submitted. If a document to be recorded is not accompanied by a completed cover sheet, the document and the incomplete cover sheet will be returned pursuant to § 3.51 for proper completion, in which case the document and a completed cover sheet should be resubmitted.

[ 70 FR 56128 , Sept. 26, 2005]

Cover Sheet Requirements

§ 3.31 cover sheet content..

( a ) Each patent or trademark cover sheet required by § 3.28 must contain:

( 1 ) The name of the party conveying the interest;

( 2 ) The name and address of the party receiving the interest;

( 3 ) A description of the interest conveyed or transaction to be recorded;

( 4 ) Identification of the interests involved:

( i ) For trademark assignments and trademark name changes: Each trademark registration number and each trademark application number, if known, against which the Office is to record the document. If the trademark application number is not known, a copy of the application or a reproduction of the trademark must be submitted, along with an estimate of the date that the Office received the application; or

( ii ) For any other document affecting title to a trademark or patent application, registration or patent: Each trademark or patent application number or each trademark registration number or patent against which the document is to be recorded, or an indication that the document is filed together with a patent application;

( 5 ) The name and address of the party to whom correspondence concerning the request to record the document should be mailed;

( 6 ) The date the document was executed;

( 7 ) The signature of the party submitting the document. For an assignment document or name change filed electronically, the person who signs the cover sheet must either:

( i ) Place a symbol comprised of letters, numbers, and/or punctuation marks between forward slash marks (e.g., /Thomas O'Malley III/) in the signature block on the electronic submission; or

( ii ) Sign the cover sheet using some other form of electronic signature specified by the Director.

( 8 ) For trademark assignments, the entity and citizenship of the party receiving the interest. In addition, if the party receiving the interest is a domestic partnership or domestic joint venture, the cover sheet must set forth the names, legal entities, and national citizenship (or the state or country of organization) of all general partners or active members that compose the partnership or joint venture.

( b ) A cover sheet should not refer to both patents and trademarks, since any information, including information about pending patent applications, submitted with a request for recordation of a document against a trademark application or trademark registration will become public record upon recordation.

( c ) Each patent cover sheet required by § 3.28 seeking to record a governmental interest as provided by § 3.11(b) must:

( 1 ) Indicate that the document relates to a Government interest; and

( 2 ) Indicate, if applicable, that the document to be recorded is not a document affecting title (see § 3.41(b) ).

( d ) Each trademark cover sheet required by § 3.28 seeking to record a document against a trademark application or registration should include, in addition to the serial number or registration number of the trademark, identification of the trademark or a description of the trademark, against which the Office is to record the document.

( e ) Each patent or trademark cover sheet required by § 3.28 should contain the number of applications, patents or registrations identified in the cover sheet and the total fee.

( f ) Each trademark cover sheet should include the citizenship of the party conveying the interest.

( g ) The cover sheet required by § 3.28 seeking to record a joint research agreement or an excerpt of a joint research agreement as provided by § 3.11(c) must:

( 1 ) Identify the document as a “joint research agreement” (in the space provided for the description of the interest conveyed or transaction to be recorded if using an Office-provided form);

( 2 ) Indicate the name of the owner of the application or patent (in the space provided for the name and address of the party receiving the interest if using an Office-provided form);

( 3 ) Indicate the name of each other party to the joint research agreement party (in the space provided for the name of the party conveying the interest if using an Office-provided form); and

( 4 ) Indicate the date the joint research agreement was executed.

( h ) The assignment cover sheet required by § 3.28 for a patent application or patent will be satisfied by the Patent Law Treaty Model International Request for Recordation of Change in Applicant or Owner Form, Patent Law Treaty Model International Request for Recordation of a License/Cancellation of the Recordation of a License Form, Patent Law Treaty Model Certificate of Transfer Form or Patent Law Treaty Model International Request for Recordation of a Security Interest/Cancellation of the Recordation of a Security Interest Form, as applicable, except where the assignment is also an oath or declaration under § 1.63 of this chapter . An assignment cover sheet required by § 3.28 must contain a conspicuous indication of an intent to utilize the assignment as an oath or declaration under § 1.63 of this chapter .

[ 57 FR 29642 , July 6, 1992, as amended at 62 FR 53202 , Oct. 10, 1997; 64 FR 48927 , Sept. 8, 1999; 67 FR 79523 , Dec. 30, 2002; 69 FR 29879 , May 26, 2004; 70 FR 1824 , Jan. 11, 2005; 70 FR 56128 , Sept. 26, 2005; 73 FR 67775 , Nov. 17, 2008; 77 FR 48825 , Aug. 14, 2012; 78 FR 62408 , Oct. 21, 2013]

§ 3.34 Correction of cover sheet errors.

( a ) An error in a cover sheet recorded pursuant to § 3.11 will be corrected only if:

( 1 ) The error is apparent when the cover sheet is compared with the recorded document to which it pertains, and

( 2 ) A corrected cover sheet is filed for recordation.

( b ) The corrected cover sheet must be accompanied by a copy of the document originally submitted for recording and by the recording fee as set forth in § 3.41 .

§ 3.41 Recording fees.

( a ) All requests to record documents must be accompanied by the appropriate fee. Except as provided in paragraph (b) of this section, a fee is required for each application, patent and registration against which the document is recorded as identified in the cover sheet. The recording fee is set in § 1.21(h) of this chapter for patents and in § 2.6(b)(6) of this chapter for trademarks.

( b ) No fee is required for each patent application and patent against which a document required by Executive Order 9424 is to be filed if:

( 1 ) The document does not affect title and is so identified in the cover sheet (see § 3.31(c)(2) ); and

( 2 ) The document and cover sheet are either: Faxed or electronically submitted as prescribed by the Director, or mailed to the Office in compliance with § 3.27 .

[ 63 FR 52159 , Sept. 30, 1998, as amended at 69 FR 29879 , May 26, 2004]

Date and Effect of Recording

§ 3.51 recording date..

The date of recording of a document is the date the document meeting the requirements for recording set forth in this part is filed in the Office. A document which does not comply with the identification requirements of § 3.21 will not be recorded. Documents not meeting the other requirements for recording, for example, a document submitted without a completed cover sheet or without the required fee, will be returned for correction to the sender where a correspondence address is available. The returned papers, stamped with the original date of receipt by the Office, will be accompanied by a letter which will indicate that if the returned papers are corrected and resubmitted to the Office within the time specified in the letter, the Office will consider the original date of filing of the papers as the date of recording of the document. The procedure set forth in § 1.8 or § 1.10 of this chapter may be used for resubmissions of returned papers to have the benefit of the date of deposit in the United States Postal Service. If the returned papers are not corrected and resubmitted within the specified period, the date of filing of the corrected papers will be considered to be the date of recording of the document. The specified period to resubmit the returned papers will not be extended.

[ 62 FR 53203 , Oct. 10, 1997]

§ 3.54 Effect of recording.

The recording of a document pursuant to § 3.11 is not a determination by the Office of the validity of the document or the effect that document has on the title to an application, a patent, or a registration. When necessary, the Office will determine what effect a document has, including whether a party has the authority to take an action in a matter pending before the Office.

§ 3.56 Conditional assignments.

Assignments which are made conditional on the performance of certain acts or events, such as the payment of money or other condition subsequent, if recorded in the Office, are regarded as absolute assignments for Office purposes until cancelled with the written consent of all parties or by the decree of a court of competent jurisdiction. The Office does not determine whether such conditions have been fulfilled.

§ 3.58 Governmental registers.

( a ) The Office will maintain a Departmental Register to record governmental interests required to be recorded by Executive Order 9424. This Departmental Register will not be open to public inspection but will be available for examination and inspection by duly authorized representatives of the Government. Governmental interests recorded on the Departmental Register will be available for public inspection as provided in § 1.12 .

( b ) The Office will maintain a Secret Register to record governmental interests required to be recorded by Executive Order 9424. Any instrument to be recorded will be placed on this Secret Register at the request of the department or agency submitting the same. No information will be given concerning any instrument in such record or register, and no examination or inspection thereof or of the index thereto will be permitted, except on the written authority of the head of the department or agency which submitted the instrument and requested secrecy, and the approval of such authority by the Director. No instrument or record other than the one specified may be examined, and the examination must take place in the presence of a designated official of the Patent and Trademark Office. When the department or agency which submitted an instrument no longer requires secrecy with respect to that instrument, it must be recorded anew in the Departmental Register.

Domestic Representative

§ 3.61 domestic representative..

If the assignee of a patent, patent application, trademark application or trademark registration is not domiciled in the United States, the assignee may designate a domestic representative in a document filed in the United States Patent and Trademark Office. The designation should state the name and address of a person residing within the United States on whom may be served process or notice of proceedings affecting the application, patent or registration or rights thereunder.

[ 67 FR 79522 , Dec. 30, 2002]

Action Taken by Assignee

§ 3.71 prosecution by assignee..

( a ) Patents—conducting of prosecution. One or more assignees as defined in paragraph (b) of this section may conduct prosecution of a national patent application as the applicant under § 1.46 of this title , or conduct prosecution of a supplemental examination or reexamination proceeding, to the exclusion of the inventor or previous applicant or patent owner. Conflicts between purported assignees are handled in accordance with § 3.73(c)(3) .

( b ) Patents—assignee(s) who can prosecute. The assignee(s) who may conduct either the prosecution of a national application for patent as the applicant under § 1.46 of this title or a supplemental examination or reexamination proceeding are:

( 1 ) A single assignee. An assignee of the entire right, title and interest in the application or patent, or

( 2 ) Partial assignee(s) together or with inventor(s). All partial assignees, or all partial assignees and inventors who have not assigned their right, title and interest in the application or patent, who together own the entire right, title and interest in the application or patent. A partial assignee is any assignee having less than the entire right, title and interest in the application or patent. The word “assignee” as used in this chapter means with respect to patent matters the single assignee of the entire right, title and interest in the application or patent if there is such a single assignee, or all of the partial assignees, or all of the partial assignee and inventors who have not assigned their interest in the application or patent, who together own the entire right, title and interest in the application or patent.

( c ) Patents—Becoming of record. An assignee becomes of record as the applicant in a national patent application under § 1.46 of this title , and in a supplemental examination or reexamination proceeding, by filing a statement in compliance with § 3.73(c) that is signed by a party who is authorized to act on behalf of the assignee.

( d ) Trademarks. The assignee of a trademark application or registration may prosecute a trademark application, submit documents to maintain a trademark registration, or file papers against a third party in reliance on the assignee's trademark application or registration, to the exclusion of the original applicant or previous assignee. The assignee must establish ownership in compliance with § 3.73(b) .

[ 65 FR 54682 , Sept. 8, 2000, as amended at 77 FR 48825 , Aug. 14, 2012]

§ 3.73 Establishing right of assignee to take action.

( a ) The original applicant is presumed to be the owner of an application for an original patent, and any patent that may issue therefrom, unless there is an assignment. The original applicant is presumed to be the owner of a trademark application or registration, unless there is an assignment.

( b ) In order to request or take action in a trademark matter, the assignee must establish its ownership of the trademark property of paragraph (a) of this section to the satisfaction of the Director. The establishment of ownership by the assignee may be combined with the paper that requests or takes the action. Ownership is established by submitting to the Office a signed statement identifying the assignee, accompanied by either:

( 1 ) Documentary evidence of a chain of title from the original owner to the assignee ( e.g., copy of an executed assignment). The documents submitted to establish ownership may be required to be recorded pursuant to § 3.11 in the assignment records of the Office as a condition to permitting the assignee to take action in a matter pending before the Office; or

( 2 ) A statement specifying where documentary evidence of a chain of title from the original owner to the assignee is recorded in the assignment records of the Office ( e.g., reel and frame number).

( 1 ) In order to request or take action in a patent matter, an assignee who is not the original applicant must establish its ownership of the patent property of paragraph (a) of this section to the satisfaction of the Director. The establishment of ownership by the assignee may be combined with the paper that requests or takes the action. Ownership is established by submitting to the Office a signed statement identifying the assignee, accompanied by either:

( i ) Documentary evidence of a chain of title from the original owner to the assignee ( e.g., copy of an executed assignment). The submission of the documentary evidence must be accompanied by a statement affirming that the documentary evidence of the chain of title from the original owner to the assignee was or concurrently is being submitted for recordation pursuant to § 3.11 ; or

( ii ) A statement specifying where documentary evidence of a chain of title from the original owner to the assignee is recorded in the assignment records of the Office ( e.g., reel and frame number).

( 2 ) If the submission is by an assignee of less than the entire right, title and interest ( e.g., more than one assignee exists) the Office may refuse to accept the submission as an establishment of ownership unless:

( i ) Each assignee establishes the extent (by percentage) of its ownership interest, so as to account for the entire right, title and interest in the application or patent by all parties including inventors; or

( ii ) Each assignee submits a statement identifying the parties including inventors who together own the entire right, title and interest and stating that all the identified parties own the entire right, title and interest.

( 3 ) If two or more purported assignees file conflicting statements under paragraph (c)(1) of this section, the Director will determine which, if any, purported assignee will be permitted to control prosecution of the application.

( d ) The submission establishing ownership under paragraph (b) or (c) of this section must show that the person signing the submission is a person authorized to act on behalf of the assignee by:

( 1 ) Including a statement that the person signing the submission is authorized to act on behalf of the assignee;

( 2 ) Being signed by a person having apparent authority to sign on behalf of the assignee; or

( 3 ) For patent matters only, being signed by a practitioner of record.

[ 77 FR 48825 , Aug. 14, 2012]

Issuance to Assignee

§ 3.81 issue of patent to assignee..

( a ) With payment of the issue fee: An application may issue in the name of the assignee consistent with the application's assignment where a request for such issuance is submitted with payment of the issue fee, provided the assignment has been previously recorded in the Office. If the assignment has not been previously recorded, the request must state that the document has been filed for recordation as set forth in § 3.11 .

( b ) After payment of the issue fee: Any request for issuance of an application in the name of the assignee submitted after the date of payment of the issue fee, and any request for a patent to be corrected to state the name of the assignee, must state that the assignment was submitted for recordation as set forth in § 3.11 before issuance of the patent, and must include a request for a certificate of correction under § 1.323 of this chapter (accompanied by the fee set forth in § 1.20(a) ) and the processing fee set forth in § 1.17(i) of this chapter .

( c ) Partial assignees.

( 1 ) If one or more assignee, together with one or more inventor, holds the entire right, title, and interest in the application, the patent may issue in the names of the assignee and the inventor.

( 2 ) If multiple assignees hold the entire right, title, and interest to the exclusion of all the inventors, the patent may issue in the names of the multiple assignees.

§ 3.85 Issue of registration to assignee.

The certificate of registration may be issued to the assignee of the applicant, or in a new name of the applicant, provided that the party files a written request in the trademark application by the time the application is being prepared for issuance of the certificate of registration, and the appropriate document is recorded in the Office. If the assignment or name change document has not been recorded in the Office, then the written request must state that the document has been filed for recordation. The address of the assignee must be made of record in the application file.

Part 6 is placed in the separate grouping of parts pertaining to trademarks regulations.

Part 7 is placed in the separate grouping of parts pertaining to trademarks regulations.

Part 1 is placed in the separate grouping of parts pertaining to patents regulations.

Part 3 pertaining to both patents and trademarks is placed in the grouping pertaining to patents regulations.

Part 4 is placed in the separate grouping of parts pertaining to patents regulations.

Part 5 is placed in the separate grouping of parts pertaining to patents regulations.

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The basics of patent assignments

What is a patent assignment, what are the requirements to make it valid, and why would a business enter into a patent assignment agreement? Read on to find answers to these questions and more.

Find out more about Patents

by   Cindy DeRuyter, Esq.

Cindy DeRuyter, Esq., has been writing for LegalZoom since 2018. She earned a Juris Doctor from Mitchell Hamline Scho...

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Updated on: December 4, 2023 · 2 min read

Defining Patent Assignment

Requirements to assign a patent, searching for patent assignments.

Assigning patents can be a great way for companies to generate revenue and reduce risks associated with intellectual property ownership. If you are considering entering into a patent assignment agreement, understand that it is irrevocable. Because of that, evaluate proposed terms and provisions carefully before moving forward.

Here's a high-level overview of how patent assignments work: when a patent's owner or applicant assigns it to another individual or company, the assignor agrees to relinquish their rights to enforce or benefit from it in the future.

You can assign rights for applications still pending with the United States Patent and Trademark Office (USPTO). When the USPTO approves the application, the assignee benefits from and may use and enforce the patent, not the assignor. Companies also assign rights for issued patents, which relieves the assignor of the burden of enforcing their intellectual property and provides a source of revenue.

Patent assignments can be lucrative for both parties. While assignors make money right away, assignees can create revenue streams by earning money from royalty payments. After an assignment is complete, the assignee has exclusive rights to such income.

A patent assignment agreement documents the transfer and arrangement between the parties. If you are considering entering into one, know that you need it to be written—a verbal agreement alone is insufficient.

Don't underestimate the importance of this, either. Without a valid agreement on file with the USPTO, an intended assignor remains legally responsible for the patent and an intended assignee gains none of the rights or benefits.

Here are the requirements for a valid written assignment:

• Confirm that the assignor has the full, legal right to make the assignment and that the assignee can legally assume the rights and obligations.
• Clearly identify both the assignor and assignee using legal names. If more than one company owns the patent, identify all owners.
• Identify the underlying patent by title and number and include a complete and accurate description of it.
• Describe the terms of the agreement, including financial arrangements.
• All parties must sign the agreement, with limited exceptions in situations where the assignor cannot be reached but where enough evidence exists that documents their intentions and rights.
• File the patent assignment with the USPTO within three months after the agreement is signed, paying the then-current fee.

Though the agreement is a legal document, it does not need to be notarized. However, obtaining notarization for the signatures provides added protection, limiting the risk of a party later claiming a signature was not valid.

The USPTO maintains a patent assignment database that includes all the assignments recorded since August 1980. Using the database, you can search with the assignor's or assignee's name, the patent number, application number, publication number, or other identifying information.

Properly assigning patents protects both assignors and assignees. If you want to assign a patent, downloading a patent assignment form can help. Alternatively, you can consult an intellectual property attorney .

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What is a Patent Assignment?

Whether you’re curious about assigning a patent to someone else or having a patent assigned to you, you might be wondering what a patent assignment is? Patent law allows patent holders to assign patents to other parties. Patent assignments often take place between an employee and his company, however, it’s not uncommon for a person to assign his interest to a patent to a third party. So, what exactly is a patent assignment? We will cover this below.

What is a Patent Assignment ?

A patent assignment is an agreement by the patent holder (assignor) to transfer his interest and ownership of a patent to another party known as the assignee (party receiving patent rights). Once a patent holder executes an assignment agreement assigning his interest in a patent to another party, the assignor loses his rights under the patent. The assignor (transferor) will no longer be able to stop others from using, making, and selling the patent invention. Instead, the assignee gains these rights.

In the United States, patent assignments are very common between an employee and his company because a company or business cannot apply for a patent. An inventor has to apply for a patent and then the inventor then assigns his interest under a patent to the company for which he is working.

If you’re an inventor and you want to assign your patent to another party, just remember that patent assignments are final. Once an inventor assigns (transfers) his interest in a patent to another party, the assignment (transfer of rights) cannot be undone, it’s final.

What is a Patent Assignor?

What is a patent assignee, requirements to execute a patent assignment agreement.

Once the assignment agreement is executed, it must be filed with the USPTO for the agreement to take effect. Please remember that the agreement needs to be in writing, oral agreements are not sufficient to transfer the rights from the patent holder to the assignee.

Who Owns the Patent After a Patent Assignment?

Assigning a patent vs licensing a patent.

Assigning a patent is much different than licensing a patent. When a patent holder assigns his interest in a patent to another party, he is usually transferring ownership of the patent to the other party. Patent licensing is different in that a license is merely a transfer of the right to use the patent in the manner specified in the licensing agreement. Assignments transfer ownership while a license transfers the right to use the patented invention. That said, if a patent is assigned, the information of the assignor and assignee will become part of the public record. Whereas if an inventor licenses his patent, that information is not typically published to the public.

Does a Patent Assignment Need to be Notarized?

Can multiple people own a patent.

Yes, multiple people can own a patent. For example, if three inventors make a single invention, all three are considered joint inventors and their names should appear on the patent application, as well as the issued patent.

Patent Assignment Tips

1) hire an attorney to assist you with your patent assignment, 2) don’t forget to record a patent assignment.

If you have been assigned a patent, don’t forget to record your assignment with the USPTO. We say this because patent assignments don’t go into effect unless the assignment is recorded with the patent office. Recording a patent assignment tells the patent office that you are the new owner of the patent.

3) Notarize Your Assignment Agreement

4) how much does it cost to record an assignment with the uspto, patent assignment.

Let’s do a quick recap. A patent assignment is the transfer of ownership of a patent from one party to another. The party transferring its right is known as the assignor and the party receiving the patent rights is known as the assignee.

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29 Jan 2024

Patent Assignment: How to Transfer Ownership of a Patent

By Michael K. Henry, Ph.D.

• Intellectual Property
• Patent Prosecution

This is the second in a two-part blog series on owning and transferring the rights to a patent. ( Read part one here. )

As we discussed in the first post in this series, patent owners enjoy important legal and commercial benefits: They have the right to exclude others from making, selling, using or importing the claimed invention, and to claim damages from anyone who infringes their patent.

However, a business entity can own a patent only if the inventors have assigned the patent rights to the business entity. So if your employees are creating valuable IP on behalf of your company, it’s important to get the patent assignment right, to ensure that your business is the patent owner.

In this post, we’ll take a closer look at what a patent assignment even is — and the best practices for approaching the process. But remember, assignment (or transfer of ownership) is a function of state law, so there might be some variation by state in how all this gets treated.

What Is a Patent Assignment and Why Does it Matter?

A patent assignment is an agreement where one entity (the “assignor”) transfers all or part of their right, title and interest in a patent or application to another entity (the “assignee”). 

In simpler terms, the assignee receives the original owner’s interest and gains the exclusive rights to pursue patent protection (through filing and prosecuting patent applications), and also to license and enforce the patent. 

Ideally, your business should own its patents if it wants to enjoy the benefits of the patent rights. But  under U.S. law , only an inventor or an assignee can own a patent — and businesses cannot be listed as an inventor. Accordingly, patent assignment is the legal mechanism that transfers ownership from the inventor to your business.

Patent Assignment vs. Licensing

Keep in mind that an assignment is different from a license. The difference is analogous to selling versus renting a house.

In a license agreement, the patent owner (the “licensor”) gives another entity (the “licensee”) permission to use the patented technology, while the patent owner retains ownership. Like a property rental, a patent license contemplates an ongoing relationship between the licensor and licensee.

In a patent assignment, the original owner permanently transfers its ownership to another entity. Like a property sale, a patent assignment is a permanent transfer of legal rights.

U sing Employment Agreements to Transfer Patent Ownership

Before your employees begin developing IP,  implement strong hiring policies  that ensure your IP rights will be legally enforceable in future.

If you’re bringing on a new employee, have them sign an  employment agreement  that establishes up front what IP the company owns — typically, anything the employee invents while under your employment. This part of an employment agreement is often presented as a self-contained document, and referred to as a “Pre-Invention Assignment Agreement” (PIAA).

The employment agreement should include the following provisions:

• Advance assignment of any IP created while employed by your company, or using your company’s resources
• An obligation to disclose any IP created while employed by your company, or using your company’s resources
• An ongoing obligation to provide necessary information and execute documents related to the IP they created while employed, even after their employment ends
• An obligation not to disclose confidential information to third parties, including when the employee moves on to a new employer

To track the IP your employees create, encourage your employees to document their contributions by completing  invention disclosure records .

But the paperwork can be quite involved, which is why your employment policies should also include  incentives to create and disclose valuable IP .

Drafting Agreements for Non-Employees

Some of the innovators working for your business might not have a formal employer-employee relationship with the business. If you don’t make the appropriate arrangements beforehand, this could complicate patent assignments. Keep an eye out for the following staffing arrangements:

• Independent contractors:  Some inventors may be self-employed, or they may be employed by one of your service providers.
• Joint collaborators:  Some inventors may be employed by, say, a subsidiary or service company instead of your company.
• Anyone who did work through an educational institution : For example, Ph.D. candidates may not be employees of either their sponsoring institution or your company.

In these cases, you can still draft contractor or collaborator agreements using the same terms outlined above. Make sure the individual innovator signs it before beginning any work on behalf of your company.

O btaining Written Assignments for New Patent Applications

In addition to getting signed employment agreements, you should  also  get a written assignments for each new patent application when it’s filed, in order to memorialize ownership of the specific patent property.

Don’t rely exclusively on the employment agreement to prove ownership:

• The employment agreement might contain confidential terms, so you don’t want to record them with the patent office
• Because employment agreements are executed before beginning the process of developing the invention, they won’t clearly establish what specific patent applications are being assigned

While you  can  execute the formal assignment for each patent application after the application has been filed, an inventor or co-inventor who no longer works for the company might refuse to execute the assignment.

As such, we recommend executing the assignment before filing, to show ownership as of the filing date and avoid complications (like getting signatures from estranged inventors).

How to Execute a Written Patent Agreement

Well-executed invention assignments should:

• Be in writing:  Oral agreements to assign patent rights are typically not enforceable in the United States
• Clearly identify all parties:  Include the names, addresses, and relationship of the assignor(s) and assignee
• Clearly identify the patent being assigned:  State the patent or patent application number, title, inventors, and filing date
• Be signed by the assignors
• Be notarized : If notarization isn’t possible, have one or two witnesses attest to the signatures

Recording a Patent Assignment With the USPTO

Without a recorded assignment with the U.S. patent office, someone else could claim ownership of the issued patent, and you could even lose your rights in the issued patent in some cases. 

So the patent owner (the Assignee) should should record the assignment through the  USPTO’s Assignment Recordation Branch . They can use the  Electronic Patent Assignment System (EPAS)  to file a  Recordation Cover Sheet  along with a copy of the actual patent assignment agreement.

They should submit this paperwork  within three months  of the assignment’s date. If it’s recorded electronically, the USPTO  won’t charge a recordation fee .

Need to check who owns a patent?  The USPTO website  publicly lists all information about a patent’s current and previous assignments.

When Would I Need to Execute a New Assignment for a Related Application?

You’ll need only one patent assignment per patent application, unless new matter is introduced in a new filing (e.g., in a  continuation-in-part , or in a non-provisional application that adds new matter to a  provisional application ). In that case, you’ll need an additional assignment to cover the new matter — even if it was developed by the same inventors.

What If an Investor Won’t Sign the Written Assignment?

If you can’t get an inventor to sign an invention assignment, you can still move forward with a patent application — but you’ll need to document your ownership. To document ownership, you can often rely on an   employee agreement ,  company policy ,  invention disclosure , or other employment-related documentation.

D o I Need to Record My Assignments in Foreign Countries?

Most assignments transfer all rights, title, and interest in all patent rights throughout the world.

But in some countries, the assignment might not be legally effective until the assignment has been recorded in that country — meaning that the assignee can’t enforce the patent rights, or claim damages for any infringement that takes place before the recordation. 

And there might be additional formal requirements that aren’t typically required in the United States. For example, some countries might require a transfer between companies to be signed by both parties, and must contain one or both parties’ addresses.

If you’re assigning patents issued by a foreign country, consult a patent attorney in that country to find out what’s required to properly document the transfer of ownership.

N eed Help With Your Patent Assignments?

Crafting robust assignment agreements is essential to ensuring the proper transfer of patent ownership. An  experienced patent professional  can help you to prepare legally enforceable documentation.

Henry Patent Law Firm has worked with tech businesses of all sizes to execute patent assignments —  contact us now  to learn more.

GOT A QUESTION? Whether you want to know more about the patent process or think we might be a good fit for your needs – we’d love to hear from you!

Michael K. Henry, Ph.D.

Michael K. Henry, Ph.D., is a principal and the firm’s founding member. He specializes in creating comprehensive, growth-oriented IP strategies for early-stage tech companies.

10 Jan 2024

Geothermal Energy: An Overview of the Patent Landscape

By Michael Henry

Don't miss a new article. Henry Patent Law's Patent Law News + Insights blog is designed to help people like you build smart, scalable patent strategies that protect your intellectual property as your business grows. Subscribe to receive email updates every time we publish a new article — don't miss out on key tips to help your business be more successful.

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US Inventor Declarations and Assignments

After a patent application has been filed, the inventor may be required to sign and submit various forms.  What happens if this is several years into the patent process, and the inventor can no longer be reached to sign these forms?  And what can you do now to prevent any complications from arising?  

One country which requires the inventor to submit signed forms is the USA.  Each inventor named on the application must submit a signed declaration and assignment with the US Patent and Trademark Office before payment of the Issue Fee.

What are US Declarations and Assignments?

An inventor declaration confirms the inventor’s belief that they are the original (or joint original) inventor of the claimed invention.  If an inventor declaration is not submitted by each inventor before payment of the Issue Fee, the application will be abandoned.

An assignment provides documentary evidence that the rights in the invention have been transferred from the inventor to the applicant, and that the applicant is the rightful owner of any patent granted for the claimed invention.  If a signed assignment is not submitted by each inventor before payment of the Issue Fee, the application could grant in the name of the inventor(s) instead of the applicant, although this can usually be rectified post-grant.

What if the inventor cannot or will not sign these forms?

In cases where the US application is filed later in the patent process, such as at the 12 month convention deadline, or even the 30 month national phase deadline, it is possible that the inventor(s) may no longer be available to sign the required forms (for example, they have left the company).  What happens then?

A substitute statement can be submitted in lieu of a declaration if an inventor is deceased, is under legal incapacity, has refused to sign the declaration, or cannot be found or reached after a diligent effort.  To demonstrate a “ diligent effort ”, it is usually sufficient to send a copy of the forms to the inventor’s last known address, along with an explanation of what is required and specifying a reasonable time-period for returning the signed forms (for example, 28 days).  If the forms are not returned by the end of this period, then it can be assumed that the inventor is no longer reachable.

If an inventor cannot or will not sign the required assignment to transfer their rights in the invention to the applicant, then one possible option where the inventor is an employee of the applicant is to submit their employment agreement in lieu of the assignment.  However, for the purposes of the USA, the employment agreement must address the employee’s obligation to assign any Intellectual Property (IP) rights created during their employment to their employer.  Ideally the document should contain language which indicates a present and active intent to assign any IP rights (for example, “ I hereby assign… ”), rather than language which merely indicates an intent to assign any IP rights in the future (for example, “ I agree to assign… ”).

If the employment agreement does not contain suitable language, one option is to rely on any local IP laws which legally require the employee to assign any IP rights to their employer.  For example, in the UK, section 39 of the Patents Act 1977 states that an invention made by an employee will automatically belong to the employer if:

“ (a) it was made in the course of the normal duties of the employee or in the course of duties falling outside his normal duties, but specifically assigned to him, and the circumstances in either case were such that an invention might reasonably be expected to result from the carrying out of his duties; or

(b) the invention was made in the course of the duties of the employee and, at the time of making the invention, because of the nature of his duties and the particular responsibilities arising from the nature of his duties he had a special obligation to further the interests of the employer’s undertaking. ”

Therefore, if the employee and the employer are based in the UK and the invention falls into category (a) or (b) above, then the invention will automatically belong to the employer under UK law.

As such, in addition to filing a copy of the employment contract, a copy of the relevant local laws and a memorandum explaining why, under local law, the invention belongs to the employer can also be filed to prove full ownership of the application by the applicant.

What can the applicant do to avoid the above complications?

1/ Make use of PCT declarations if filing an International application, particularly:

• (i) the declaration as to the identity of the inventor;
• (ii) the declaration as to the applicant’s entitlement, as at the international filing date, to apply for and be granted a patent; and,
• (iv) the declaration of inventorship (for the purposes of the designation of the USA).

For example, declaration (ii) satisfies the proof of right requirements in the Indian national phase, and (iv) satisfies the declaration requirements in the US national phase.  Declarations (i) and (ii) can be signed off by the acting attorney; declaration (iv) however must be signed by each inventor.

2/ Make sure any employment agreements, particularly for research & development staff, clearly address the employee’s obligation to assign any IP rights created, and include language which actively and presently assigns those rights to the employer.

If existing employment agreements do not contain such clauses, a separate agreement can be drawn up for the employee to sign and then appended to their contract. 

3/ Include a clause in the employment agreement requiring the employee to sign any necessary forms both during and after their employment.  This contractual agreement can be referred to should the employee actively refuse to sign any required forms later in the patent process.

Taking the above actions now can help to avoid any problems later in the patenting process which will likely incur unnecessary costs to rectify.  Should you require any assistance or advice, please contact me at christina .schiavone@ wynne-jones .com .

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Increased employee mobility, health challenges, and the economic downturn due to the COVID-19 pandemic may result in more inventors than usual being unavailable to assign patent rights.  Fortunately, applicants may procure a U.S. patent even if an assignment document cannot be obtained for the application to be filed.  This article summarizes the requirements for filing and prosecuting a U.S. patent application filed post-America Invents Act (AIA) without a patent assignment and identifies pitfalls when establishing ownership of patent rights for patent prosecution.  Inventors being unavailable may also complicate obtaining the declarations required for U.S. patent prosecution, but solutions are available as we previously discussed  here .

Need for an Assignment

For a patent to issue to an assignee, the United States Patent and Trademark Office (the “USPTO”) must be made formally aware of the assignment so that the assignee is recognized as the patent applicant.  Filing an Application Data Sheet (ADS) for a patent application identifying the assignee as the applicant provides informal notice to the USPTO.   MPEP § 301  discusses ownership/assignability of patents and applications, including formal assignment recordation at the USPTO.  Recording an assignment may be necessary to permit the assignee to “take action” in the patent application during prosecution and for the patent to issue in the name of the assignee.   37 CFR 1.46 ; MPEP §§  301 ,  302 ,  605 .  In other words, assignees may face obstacles prosecuting a patent without an executed assignment.  The assignment(s) must transfer the entirety of patent rights from each of the inventors to the assignee, e.g., corporation, partnership, university, government entity, etc.  There can be multiple assignees if different inventors assign their rights to different assignees, a situation that results in two or more partial assignees that must each be identified to the USPTO as an applicant.   MPEP § 301 .

As only one patent assignment is required per inventor per patent application, subsequent applications claiming priority may often rely on an earlier assignment (depending on the assignment’s particular language).  If new subject matter is introduced in the application being filed, such as in a continuation-in-part application, another assignment may be required.

Persons who may file a Patent Application without an Assignment

Fortunately, applicants may procure a patent even if an inventor is not available to sign an assignment before application filing or during prosecution before payment of the issue fee. 

A person to whom the inventor is under the obligation to assign the invention may file a patent application and be identified as the applicant.  An assignment can then be subsequently executed and the USPTO notified as discussed above.  Alternatively, other documentary evidence of ownership, such as an employment agreement, invention disclosure form, or other documentation, can be recorded with the USPTO in lieu of a signed assignment document.   37 CFR 1.46 .  Employment agreements may contain language stating that the inventor assigns all rights, title, and interests in any invention developed while employed by the employer.  In some instances, the employment agreement may affirmatively state that the employee is under an obligation to assign the invention to the employer.  An invention disclosure form may contain language stating that the inventor’s signature on the form acknowledges the inventor’s assignment of and/or obligation to assign any rights, title, and interest in the invention disclosure to the employer.  If the invention disclosure form includes the inventor’s signature, this may be sufficient evidence that the employer is an obligated assignee.   37 C.F.R. 1.46(b)(1) .  It is important to examine any documentary evidence of ownership before recordation to identify any information (e.g., industry trend language, discussion of prior art, personal information of an employee, etc.) that may require redaction before recordation and/or may make public recording of the documentary evidence an undesirable option for the applicant.

Also, a person who shows sufficient proprietary interest in the matter may file a patent application and be identified as the applicant upon showing that such an action is appropriate, with the resulting patent being issuable in the applicant’s name.   37 CFR 1.46 .  If filing a national stage application, the applicant must have been identified in the international stage of the international application or as the applicant in the publication of the international registration. 

Showing Sufficient Proprietary Interest or Obligation to Assign

As provided in  37 CFR 1.46(b)(2) , “[i]f the applicant is a person who otherwise shows sufficient proprietary interest in the matter, such applicant must submit a petition including: (i) The fee set forth in § 1.17(g); (ii) A showing that such person has sufficient proprietary interest in the matter; and (iii) A statement that making the application for patent by a person who otherwise shows sufficient proprietary interest in the matter on behalf of and as agent for the inventor is appropriate to preserve the rights of the parties.”  Additionally, as stated in  MPEP § 409.05 , “[t]he ability for a person who otherwise shows sufficient proprietary interest in the matter to make an application for patent is not limited to situations in which all of the inventors refuse to execute the application, or cannot be found or reached after diligent effort.”

Showing sufficient proprietary interest requires “proof of the pertinent facts and a showing that such action is appropriate to preserve the rights of the parties.”   37 CFR 1.46(a) ;  37 CFR 1.424 .  Showing sufficient proprietary interest is discussed in  MPEP § 409.05  and may be established in various ways depending on the circumstances.  MPEP § 409.05 states that

A proprietary interest obtained other than by assignment or agreement to assign may be demonstrated by an appropriate legal memorandum to the effect that a court of competent jurisdiction (federal, state, or foreign) would by the weight of authority in that jurisdiction award title of the invention to the 37 CFR 1.46 applicant.  The facts in support of any conclusion that a court would award title to the 37 CFR 1.46 applicant should be made of record by way of an affidavit or declaration of the person having firsthand knowledge of same.  The legal memorandum should be prepared and signed by an attorney at law familiar with the law of the jurisdiction involved.  A copy (in the English language) of a statute (if other than the United States statute) or a court decision (if other than a reported decision of a federal court or a decision reported in the United States Patents Quarterly) relied on to demonstrate a proprietary interest should be made of record.

Remember that an applicant as a person who otherwise shows sufficient proprietary interest in the matter must submit the required petition, fee, and information prior to paying the issue fee as set forth in  37 CFR 1.46 .

Final Considerations

Patent applicants can gain control over patent prosecution and assert patent rights even without execution of a signed assignment by an inventor.  Before doing so, however, applicants should coordinate with patent counsel regarding their particular circumstances and should consult current USPTO rules.

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Proper training equips professionals for success, and that includes patent applicants. These tools will help you access training resources, including materials and events.

Computer-based training (CBT) modules — practice and procedure for patent examiners

Examiner Training Materials

Learn how to identify which of your creative ideas might be intellectual property assets and how to protect them.

IP Identifier

IP eLearning modules

Calendar of training and public events

Courses led by USPTO trainers cover selected topics based on recent updates to current examination practice and procedure. View additional training programs about patents .

Stakeholder Offerings and Resources (SOaR)

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