Proof Of Use — a blog about trademark usage (

Twitter — @ProofofUse


Peace and Hate at the USPTO

Dot Horsing Around

You Can Go Home Again

The Parody Defense is Dead. Long Live The Parody Defense!

5 Things You Need to Fend Off A Trademark Bully

Do Not File a Trademark Application For a Trending Rallying Cry

New gTLDs and the URS (Case Brief: Porsche.Social)

TLDs and the USPTO (Case Brief: In re

The D in D-Day Does Not Stand For Donut

Pi is Irrational … So is this Trademark Dispute

Google and the Kingdom of Tonga

“It’s Gone Forever”: Was the FLAPPY BIRD Trademark Abandoned?

Facebook’s PAPER, King’s CANDY and App Store Confusion

Tweets in Ads and Trademark Law

In re Banksy, Pseudonyms and the USPTO (Better Out Than In)

Beastie Boys v. GoldieBlox: Fair Use? … How About a Fair Shake

Trademarkia … How Do You Justify That?