Harley-Davidson sues Forever 21 alleging trademark violation
Andrei Mincov's commentary on the original article
The true power of a strong trademark is that it allows its owner to stop not only complete copies, but also close (and sometimes not so close) imitations. Forever 21's emblem does not use the same words, but it looks very similar to Harley's iconic logo. That's why you want to register word marks and design marks as two separate trademarks, which Harley Davidson, naturally, did.