Assignments.
Every patent or any interest therein shall be assignable in law by an instrument in writing; and the patentee or his assigns or legal representatives may, in like manner, grant and convey an exclusive right under the patent to the whole or any specified part of the United States. Interests in patents may be vested in assignees, in grantees of exclusive sectional rights, in mortgagees, and in licensees.[p. 86]
Assignees.
An assignee is a transferee of the whole interest of the original patent or of an undivided part of such whole interest, extending to every portion of the United States. The assignment must be written or printed and duly signed.
Grantees.
A grantee acquires by the grant the exclusive right under the patent to make and use and to grant to others the right to make and use, the thing patented within and throughout some specified part of the United States, excluding the patentee therefrom. The grant must be written or printed and be duly signed.
Mortgages.
A mortgage must be written or printed and duly signed.
Licensees.
A licensee takes an interest less than or different from either of the others. A license may be oral, written, or printed, and if written or printed, must be duly signed.