507.04    Supplemental Pleadings - Fed. R. Civ. P. 15(d)

Fed. R. Civ. P. 15(d) Supplemental Pleadings. On motion and reasonable notice, the court may, on just terms, permit a party to serve a supplemental pleading setting out any transaction, occurrence, or event that happened after the date of the pleading to be supplemented. The court may permit supplementation even though the original pleading is defective in stating a claim or defense. The court may order that the opposing party plead to the supplemental pleading within a specified time.

In determining whether to grant leave to supplement a pleading under Fed. R. Civ. P. 15(d), tribunals, including the Board, use the same analysis utilized in deciding whether to grant leave to amend under Fed. R. Civ. P. 15(a). [ Note 1.] See TBMP § 507.02.

NOTES:

 1.   Topco Holdings, Inc. v. Hand 2 Hand Industries, LLC, 2022 USPQ2d 54, at *9-10 (TTAB 2022) (allowing opposer to supplement its pleading to allege ownership of applications filed after commencement of proceeding).