OT anyone know anything about trademarks in advertising ???

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I have a product I'm making that attaches to many different brands of tools and I'm having a tough time finding an answer been searching for awhile. say I'm putting them on ebay or etsy etc and I wanna put fits dewalt portercable Makita etc. do I have to put a™ or an ® after each name?? just trying to make sure I don't **** anyone off and post it right when I use someone else's name. there's lots of different folks in here from different backgrounds and lots of knowledge so I figure it was worth a shot. I've found rules for say if they are a competitor and I'm trying to say my widget is better then their widget but I can't find if it's just an accessory that fits their tool and I'm just posting their name thanks for any help :)


Active Member
Feb 3, 2016
You will likely have to check each name separately. Some will be trademarked, some will be registered, some both, some neither (rare for any well known brand).
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