This is (to my understanding) the difference between a character mark and a design mark. The Acura logo is a design mark. Acura don't, AFAIK (but I haven't se

This is (to my understanding) the difference between a character mark and a design mark. The Acura logo is a design mark. Acura don't, AFAIK (but I haven't searched because searching the USPTO for "A" sounds like hell) have a character mark on the letter A for use in cars. Consider the counterexample in the same industry: Honda and Hyundai both have H in a frame as a logo, and I have no knowledge of a trademark dispute between the two. The X trademark in question appears to be a Service Mark[0], meaning it is a name to represent a service (in this case some kind of social media chat service). My understanding is that the trademark applies to competing services regardless of the artwork or logo, so the social media chat service formerly known as Twitter may have trouble avoiding a collision with it if they want to rename themselves X. [0] https://tsdr.uspto.gov/#caseNumber=76041368&caseSearchType=US_APPLICATION&caseType=DEFAULT&searchType=statusSearch https://tsdr.uspto.gov/#caseNumber=76041368&caseSearchType=U...