Trademark Knowledge Center

    Expert guides, practical tips, and in-depth articles on trademark registration, brand protection, and intellectual property law.

    Enforcement. What to do when someone copies your mark, opposes it, or sends you a letter.

    Trademark Infringement: What It Is and What to Do About It
    Enforcement

    Trademark Infringement: What It Is and What to Do About It

    Infringement is unauthorized trademark use that causes likely confusion. Here’s how to assess it fast and choose the right response path in the U.S.

    Feb 10, 202611 min read
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    FIFA v PUMA: Both Lost World Cup 2022 Marks in Switzerland
    Enforcement

    FIFA v PUMA: Both Lost World Cup 2022 Marks in Switzerland

    Switzerland’s top court canceled four “World Cup 2022” marks—two by PUMA, two by FIFA. Here’s the rulebook it sets for non‑sponsor marketing ahead of 2026.

    Jun 11, 202610 min
    Well-Known Marks in China: CNIPA Practice vs Global Rules
    Enforcement

    Well-Known Marks in China: CNIPA Practice vs Global Rules

    China does not register “well‑known” marks. CNIPA or courts may recognize them only when needed in a case, and only with deep evidence. Here is how that works in 2026.

    Feb 24, 20269 min
    Trademark Monitoring and Enforcement: Protecting Your Brand After Registration
    Enforcement

    Trademark Monitoring and Enforcement: Protecting Your Brand After Registration

    A practical, treaty‑grounded playbook to detect, assess, and stop trademark infringements across markets after registration.

    Feb 10, 202612 min
    Trademark Monitoring and Enforcement in the EU: Protecting Your Brand Across 27 Member States
    Enforcement

    Trademark Monitoring and Enforcement in the EU: Protecting Your Brand Across 27 Member States

    How to monitor and enforce EU trade marks across 27 Member States, when to rely on EUTMs vs national marks, and how to avoid non‑use pitfalls.

    Feb 6, 202611 min
    Trademark Opposition: How to Challenge or Defend a Mark at the TTAB
    Enforcement

    Trademark Opposition: How to Challenge or Defend a Mark at the TTAB

    A practical, statute‑anchored guide to filing or defending a TTAB opposition: 30‑day window, 40‑day answer, grounds, procedure, evidence, and appeals.

    Feb 3, 202610 min
    Protecting a Brand Across ASEAN
    Enforcement

    Protecting a Brand Across ASEAN

    DEFA is still being negotiated. Here is what China‑based brands should expect for ASEAN e‑commerce trademarks, what stays the same today, and what to prepare for next.

    Jan 30, 202610 min
    China Trademark Opposition: Challenging or Defending a Mark Before CNIPA
    Enforcement

    China Trademark Opposition: Challenging or Defending a Mark Before CNIPA

    A guide to China trademark opposition before CNIPA: the 3-month period, grounds, evidence, TRAB review, and anti-squatting strategies.

    Jan 14, 202614 min
    EU Trademark Opposition: Timeline, Costs, and How to Respond
    Enforcement

    EU Trademark Opposition: Timeline, Costs, and How to Respond

    A practical guide to EU trademark opposition at EUIPO: the 3-month period, cooling-off, costs, Article 8 grounds, and how to file or defend.

    Jan 12, 202614 min
    Canadian Trademark Opposition: TMOB Proceedings
    Enforcement

    Canadian Trademark Opposition: TMOB Proceedings

    A guide to Canadian trademark opposition before the TMOB: the 2-month period, filing a Statement of Opposition, evidence rounds, costs, and strategy.

    Jan 10, 202613 min
    UK Trademark Opposition: Challenging or Defending a Mark Before the UKIPO
    Enforcement

    UK Trademark Opposition: Challenging or Defending a Mark Before the UKIPO

    A guide to UK trademark opposition at the UKIPO: the 2-month period, Form TM7, cooling-off, evidence rounds, costs awards, and defence strategies.

    Jan 8, 202614 min
    .AI & .Crypto Domain Trademarks: Filing Strategy & Cybersquatting Defense 2026
    Enforcement

    .AI & .Crypto Domain Trademarks: Filing Strategy & Cybersquatting Defense 2026

    AI and crypto domains are booming. Here’s how to lock down trademarks, use TMCH sunrises, and win UDRP disputes against cybersquatters in 2026.

    Jan 8, 202611 min
    Trademark Opposition in India: Filing and Defending Before the Registrar
    Enforcement

    Trademark Opposition in India: Filing and Defending Before the Registrar

    A guide to trademark opposition in India under Section 21: the 4-month window, Form TM-O, Counter Statement, evidence, hearings, and defense.

    Jan 6, 202610 min
    Japan JPO Trademark Opposition: Grounds, Timelines & Evidence 2026
    Enforcement

    Japan JPO Trademark Opposition: Grounds, Timelines & Evidence 2026

    A step-by-step guide to Japan’s JPO trademark opposition: who can file, grounds, deadlines, evidence strategy, and appeal paths for 2026.

    Dec 28, 202510 min
    Protecting Your Brand Online in Brazil
    Enforcement

    Protecting Your Brand Online in Brazil

    Brazil’s ECA Digital resets online brand protection. Here’s what e-commerce and digital brands must do in 2026 to stay compliant—and enforce smarter.

    Dec 27, 20258 min
    India Trademark Opposition: Deadlines, Grounds and Appeals
    Enforcement

    India Trademark Opposition: Deadlines, Grounds and Appeals

    Understand India trademark opposition after IPAB’s abolition: procedures, grounds, timelines, and how 2026-era DPIIT efficiency pushes shape your strategy.

    Dec 1, 202510 min
    Cease and Desist Letters in Australia: Enforcement 2026
    Enforcement

    Cease and Desist Letters in Australia: Enforcement 2026

    What AU brand owners need to know to draft ACCC‑compliant cease and desist letters that resolve trademark disputes fast in 2026—without rushing into court.

    Nov 22, 20259 min
    Bad-Faith Trademark Filings in China: How to Fight Back
    Enforcement

    Bad-Faith Trademark Filings in China: How to Fight Back

    How to spot and stop bad‑faith trademark filings in China in 2026—what CNIPA looks for, how to oppose, and how to unwind squatter registrations fast.

    Nov 7, 20259 min

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