I think that is his trademark.

The trademark is very well known.

In my country, you do not have to be the first to file a trademark claim in order to legally own the trademark as long as you can prove that you were the first to use the name or brand mark in question.

The depiction violated a company's registered trademark.

Rudeness is Donald Trump's trademark.

I refuse to believe "emoji" is a trademark.

You can't change your name to Tom; that's my name." "I didn't realize it was a registered trademark."

Sami trademarked his logo.