
Trademark Infringement: What It Is, How Courts Test for It, and What to Do Next
Trademark infringement costs $375K+ to litigate. Learn what it means legally, how courts test for it, the penalties, and what to do if you're on either side.
Writer
IP legal journalist who somehow gets lawyers to voluntarily share vendor content.

Trademark infringement costs $375K+ to litigate. Learn what it means legally, how courts test for it, the penalties, and what to do if you're on either side.

Trademark vs copyright vs patent: real costs ($65 to $20K+), timelines, and durations compared. Learn which IP protection your business actually needs.

Learn how to trademark a phrase at the USPTO. Covers distinctiveness tests, filing steps, $250-$350 fees, and the mistakes that get applications refused.

How long does a trademark last? US marks last 10 years but need maintenance at year 5. Learn deadlines, fees, grace periods, and what a missed filing costs.

How to trademark a logo at the USPTO: design search codes, specimen rules, composite vs. separate filing, and the mistakes that sink design mark applications.

Trademark cost in 2026: $350/class government fee, $1,000-$2,500 for attorney help, plus renewal fees. Full breakdown of every cost from filing to maintenance.

How to trademark a name at the USPTO: filing steps, $250-$350 per class fees, 12-18 month timeline, and the mistakes that get 20% of applications refused.

Trademark registration at the USPTO explained step by step: clearance searches, filing bases, examination, costs, and timelines. Data-backed 2026 guide.

How to respond to USPTO trademark office actions — covering Section 2(d), 2(e)(1), specimen failures, and identification issues with deadlines.

Guide to the 13 DuPont factors courts use to assess trademark likelihood of confusion, with real case examples and examiner weighting patterns.

How trademarks die by becoming generic — with cases from Aspirin to Google, the legal standard, policing obligations, and monitoring strategies.

A practical guide to trademark coexistence agreements — when they beat litigation, key terms to negotiate, and real-world examples.

How naked licensing destroys trademarks — covering landmark cases, the quality control requirement, franchise implications, and practical frameworks.

Guide to trade dress protection — the distinctiveness and non-functionality tests, famous examples from Coca-Cola to Louboutin, and registration strategies.

Complete guide to TTAB proceedings — opposition and cancellation timelines, costs, success rates, settlement strategies, and trial procedures.

How to prove acquired distinctiveness for trademarks — the six types of evidence, Section 2(f) claims, the five-year shortcut, and real case studies.