>>1. Even though I own the trademark, I'm not selling anything. I wanted to own the trademark to avoid these kind of situation from happening. I'm not a lawyer

>>1. Even though I own the trademark, I'm not selling anything. I wanted to own the trademark to avoid these kind of situation from happening. I'm not a lawyer, but my layperson's understanding of trademarks is that filing and owning it also bears the responsibility of defending it. When trademark challenges are left unchallenged, the trademark you own becomes more likely to be further impinged on in the future (i.e. you must show a history of maintaining and challenging other claims). This is the flipside of David vs. Goliath horror stories where large companies go after small business owners or individuals -- they're defending their trademark. In this case, you might be able to argue deliberate trademark tarnishment[1] as a form of trademark dilution[2]; not sure if it will help but worth thinking about legal options now if this bothers you this much. [1] https://www.inta.org/TrademarkBasics/FactSheets/Pages/Trademark-Dilution-(Intended-for-a-non-legal-audience).aspx https://www.inta.org/TrademarkBasics/FactSheets/Pages/Tradem... [2] https://en.wikipedia.org/wiki/Trademark_dilution#Blurring_and_tarnishment https://en.wikipedia.org/wiki/Trademark_dilution#Blurring_an...