"likelihood of confusion"

A trademark registration for the mark PROHEAR for audio headphones and related goods has been cancelled based on a likelihood of confusion with the mark PROTEAR for similar goods.   The trademark cancellation proceeding was filed and decided before the U.S. Trademark Trial and Appeal Board.

The case, Hangzhou Zhaohu Technology Co., Ltd. v. Hangzhou Johnson

Updated: January 2022

U.S. Trademark Opposition: FAQ

A trademark opposition is a contested proceeding before the U.S. Trademark Trial and Appeal Board.   Any third-party may oppose the trademark application of another party.  An opposition may be filed only when the subject application is published in the Official Gazette of the U.S. Patent and Trademark Office.  The time to file an opposition is within 30 days of publication.  Extensions of time to file an opposition may be granted for an additional 30 days upon request, and up to 90 days for good cause shown.Continue Reading Trademark Opposition Checklist for Opposers