35 U.S.C.
United States Code, 2021 Edition
Title 35 - PATENTS
PART I - UNITED STATES PATENT AND TRADEMARK OFFICE
CHAPTER 2 - PROCEEDINGS IN THE PATENT AND TRADEMARK OFFICE
Table Of Contents
From the U.S. Government Publishing Office, www.gpo.gov

Sec.
21.
Filing date and day for taking action.
22.
Printing of papers filed.
23.
Testimony in Patent and Trademark Office cases.
24.
Subpoenas, witnesses.
25.
Declaration in lieu of oath.
26.
Effect of defective execution.
27.
Revival of applications; reinstatement of reexamination proceedings.