I've got a case where 90% of my academic publications are being claimed by a professor at another university with the same name on ResearchGate. I've sent several email requests both direct and through ResearchGate messaging to ask him to remove those publications from his profile. This has been over several months with no response.
At this point, I'm thinking of sending a registered letter to the professor and his department chair to correct what I see as academic theft through inaction. However, I realize that ResearchGate is mostly at fault here. There is no mechanism to dispute ownership once assigned.
Thought about doing a DMCA takedown notice of the offending pages.
What is the best way to resolve this?