[Code of Federal Regulations]
[Title 37, Volume 1]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 37CFR3.21]

[Page 233]
 
              TITLE 37--PATENTS, TRADEMARKS, AND COPYRIGHTS
 
  CHAPTER I--UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF 
                                COMMERCE
 
PART 3--ASSIGNMENT, RECORDING AND RIGHTS OF ASSIGNEE--Table of Contents
 
Sec. 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/US90/
01234). If an assignment of a patent application filed under Sec. 
1.53(b) 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 its date of execution, name 
of each inventor, and 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 Sec. 1.53(c) is executed before the 
provisional application is filed, it must identify the provisional 
application by name of each inventor and title of the invention so that 
there can be no mistake as to the provisional application intended.

[62 FR 53202, Oct. 10, 1997]