Hasbro Wins GUESS? Trademark Opposition
Summary
The USPTO Trademark Trial and Appeal Board sustained Hasbro Inc.'s opposition against Daniella Leoni's GUESS? trademark application (TTAB No. 91303760). The decision prevents registration of the GUESS? mark by the defendant. The opposition was filed on December 15, 2025, and decided on April 10, 2026.
What changed
The TTAB sustained Hasbro Inc.'s opposition to Daniella Leoni's GUESS? trademark application. This administrative adjudication prevents the applicant from registering the GUESS? mark with the USPTO. The decision affects the parties directly involved in the opposition proceeding.\n\nTrademark applicants and owners should monitor TTAB proceedings involving similar marks to assess potential conflicts. Companies seeking to register marks should conduct thorough clearance searches to avoid opposition proceedings.
What to do next
- Monitor TTAB decisions for related trademark matters
- Review trademark filings for potential conflicts with owned marks
Archived snapshot
Apr 12, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Opposition: GUESS?
Opposition TTAB91303760-20260410 Kind: OPP Apr 10, 2026
Abstract
BD DECISION: OPP SUSTAINED
Plaintiff: Hasbro, Inc.
Defendant: Daniella Leoni
Mark at issue: GUESS?
Filing Date
2025-12-15
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