Changeflow GovPing Courts & Legal Hasbro Wins GUESS? Trademark Opposition
Routine Enforcement Amended Final

Hasbro Wins GUESS? Trademark Opposition

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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

  1. Monitor TTAB decisions for related trademark matters
  2. Review trademark filings for potential conflicts with owned marks

Archived snapshot

Apr 12, 2026

GovPing 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.

← USPTO TTAB Proceedings

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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Last updated

Classification

Agency
USPTO TTAB
Filed
April 10th, 2026
Instrument
Enforcement
Legal weight
Binding
Stage
Final
Change scope
Minor
Document ID
TTAB91303760
Docket
91303760

Who this affects

Applies to
Legal professionals Manufacturers
Industry sector
3399 Miscellaneous Manufacturing
Activity scope
Trademark registration Trademark opposition
Geographic scope
United States US

Taxonomy

Primary area
Intellectual Property
Operational domain
Legal
Topics
Consumer Protection Corporate Governance

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