
The trial period is probably the most important and consequential part of a trademark opposition or trademark cancellation (especially for the plaintiff). It is the period of time during which the parties take the testimony of their witnesses (either orally or in the form of a written affidavit or declaration) and provide to the Trademark Trial and Appeal Board (TTAB) all of their documentary evidence for the TTAB’s review and consideration. Each party’s trial period begins about two weeks after the deadline for serving its Pretrial Disclosures.



