TTAB Dismisses Opposition to TUFFSTUFF Mark with Prejudice

The TTAB issued a board decision dismissing the trademark opposition brought by I-Master Sports Inc. against Steve Borkowski Inc's TUFFSTUFF mark. The opposition was dismissed with prejudice, meaning the plaintiff cannot refile the same opposition claim. The decision was issued on April 17, 2026, for an opposition filed on November 4, 2025.

For the affected parties: I-Master Sports Inc. is barred from refiling this specific opposition and may face res judicata effects on related claims. Steve Borkowski Inc's TUFFSTUFF trademark application may proceed toward registration absent other challenges. Trademark applicants and opponents should ensure their opposition filings present clear evidentiary support, as dismissal with prejudice indicates the Board found no viable grounds to sustain the opposition.