Voluntarily withdrawal a federal trademark filing that has been challenged in TTAB may have costly consequences to an applicant's trademark rights. What are the requirements of a trademark application protest?However, if the registrant proves that the registrant is the owner of a concurrent registration of a mark in the. Need to oppose a trademark application? Please be sure to fill out the Application for Trademark or. The date of the application for patent in the United States. 60(b) to reopen a case that had been voluntarily dismissed without prejudice under Fed. Client alert. 9.21.2020.