II 116th CONGRESS 1st Session S. 440 IN THE SENATE OF THE UNITED STATES February 12, 2019 Mr. Cotton (for himself, Ms. Ernst , and Mr. Toomey ) introduced the following bill; which was read twice and referred to the Committee on the Judiciary A BILL To amend title 35, United States Code, to provide that a patent owner may not assert sovereign immunity as a defense in certain actions before the United States Patent and Trademark Office, and for other purposes.