
The trial brief in a trademark opposition or trademark cancellation is each party’s opportunity to discuss the facts of the case and to present its arguments in support of its position. The Trademark Trial and Appeal Board (TTAB) will carefully read each party’s trial brief and review the evidence the parties submitted during their trial period in making its final decision. No additional evidence may be filed with the trial brief and the plaintiff may not assert any claims that were not properly pleaded in the notice of opposition or petition for cancellation. Similarly, the defendant is prohibited from raising any affirmative defenses that were not raised in its answer.



