§ 42.9 Action by patent owner.

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Title 37—Patents, Trademarks, and Copyrights > CHAPTER I—UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE > SUBCHAPTER A—GENERAL > PART 42—TRIAL PRACTICE BEFORE THE PATENT TRIAL AND APPEAL BOARD > Subpart A—Trial Practice and Procedure > General

This text was captured on Sep 22, 2026. It is a snapshot, not a live feed, so check the official code before relying on it.

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(a) Entire interest. An owner of the entire interest in an involved application or patent may act to the exclusion of the inventor (see § 3.71 of this title).

(b) Part interest. An owner of a part interest in the subject patent may move to act to the exclusion of an inventor or a co-owner. The motion must show the inability or refusal of an inventor or co-owner to prosecute the proceeding or other cause why it is in the interests of justice to permit the owner of a part interest to act in the trial. In granting the motion, the Board may set conditions on the actions of the parties.

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