*NOTE: I am not and have never been an attorney. I post merely based upon my own experience over a freelance career spanning a couple decades. For legal advice, it is **always** best to speak to an attorney directly.*

**First, I'd contact the product producer and ask about branding/copyright removal. It's often not an issue with additional fees.**

Second, I'd express to the client that simply removing the branding/copyright may be against the terms of service for the product and could possibly result in legal action on behalf of Company X (product owner).

Third, your contract should state something about you adhering to and abiding by all legal restrictions in good faith but you are not to be held liable for specific requests made by the client which may be outside the terms of use of any product/service used.

If you've done the three above items... remove the branding. The onus then falls on the client to protect themselves. It's also wise to retain all communications regarding the matter.