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An assignment of a patent is a transfer of ownership of patent rights. An assignor is the person/entity transferring patent rights to another person/entity. An assignee is the person/entity receiving patent rights from another person/entity. The assignor transfers their patent rights to the assignee.

A certificate of title is an official state or municipal-issued document that identifies the owner(s) of personal or real property. A certificate of title provides documentary evidence of the right of ownership.

Ownership of a patent gives the patent owner the right to exclude others from making, using, offering for sale, selling, or importing into the United States the invention claimed in the patent.

403 Correspondence — With Whom Held; Customer Number Practice [R-07.2022] 37 CFR 1.33 states that when an attorney or agent has been duly appointed to prosecute an application, correspondence will be held with the attorney or agent unless some other correspondence address has been given.

A certificate of title is an official state or municipal-issued document that identifies the owner(s) of personal or real property. A certificate of title provides documentary evidence of the right of ownership.

A third party may file any patents, published patent applications, or other printed publications of potential relevance to the examination of a patent application.

154 to provide that the term of a patent (other than a design patent) begins on the date the patent issues and ends on the date that is twenty years from the date on which the application for the patent was filed in the United States or, if the application contains a specific reference to an earlier filed application ...

§ 3.73 Establishing right of assignee to take action. (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).