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title 37
Patents, Trademarks, and Copyrights
chapter I
CHAPTER I—UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE
part 42
PART 42—TRIAL PRACTICE BEFORE THE PATENT TRIAL AND APPEAL BOARD
subpart A
Subpart A—Trial Practice and Procedure
subjgrp 221
Certificate
Subjgrp 221. Certificate
§ 42.80 - Certificate.
