Interesting. Thanks for posting!
Carroll Shelby's suing the replica Cobra builders was a kinda/sorta similar thing.
I'm not an attorney and I only have a lay-person's knowledge of trademarks, but I can see how a company would have to take some sort of action to stop the runaway unauthorized use of their trademarks/logos/designs, etc.
About 25 years ago, Jeep's PR/Marketing departments launched a push on the car magazines (I was running Motor Trend at the time) to include the "R-in-a-circle" Registered Trademark label every time the Jeep name was printed. So, if you were doing a comparison road test with a Jeep and five competitors, there's a lot of use of "Jeep"...and that would require lots of R's in circles.
As an editor (and thinking as a reader) having that trademark thingy appear every time "Jeep" was mentioned slowed down the flow of the article. And, YES, Jeep insisted it be done every single time its name was used.
I remember saying to the Jeep PR execs, at the time, that there's a potential downside they may not have thought about: It could look to the readers that (if a magazine put a photo of a Jeep on its cover and used the "R-in-a-circle" logo with the Jeep name) it could appear that the magazine cover was bought and paid for by Jeep.
That would bite twice:
1. There goes any journalistic integrity on the magazine's part. Welcome to "Pay-to-Play Car Magazine", folks!
2. It also could look like Jeep had to resort to buying a front cover, so that must mean they're not getting many covers on their vehicles' merits. (Self-fulfilling prophecy there!)
But, they enforced it! Not that there's much that Jeep (no-R-in-a-circle) could do to you (other than remind you to not do it again) but it would indeed hurt that magazine & car manufacturer's relations, for a period of time, to blatantly refuse to honor their request.
The entire process got to be such a PITA for everyone, including Jeep (R-in-a-circle), to administer (and possibly because a year or so had elapsed while doing all those Rs-in-circles, so some precedence had been achieved) that the "Registered Trademark Forever Rule" faded away.