What type of lawyer do I hire?

Tim - I agree with the attorneys' responses above. More information is needed, though, to decide your next steps. Contacting a local IP attorney is...

Class 42 appears to be a safe choice as it seems you are involved in scientific services and/or research. You could also consider Class 41 if you...

If you posted this video yourself, then I agree with the previous attorney's answer. Can't you simply take down the video? If someone else posted...

I'm not sure when you say you contacted "Seller's Support" if this is the right department to be handling your issue. Amazon has a Report...

For direct trademark infringement, you may have to act against the third parties posting on Facebook. Your fact situation reminds me of a case...