Perhaps a "Please remove Pong as it is a copy of Tennis for Two" would be more appropriate? Alternatively, "Please remove Pong as it is a copy of Tennis [on the Magnavox Odyssey]."
That lawsuit actually transpired, but it was about a patent, not a trademark or copyright. Magnavox and Atari settled, with Atari agreeing to license Magnavox's 1972 patent on video games that use collision detection between at least two moving objects. But as I pointed out in "THIS FAN GAME VIDEO WILL BE FLAGGED", Tetris Holding owns no U.S. patents. aadbaard said he had N-Blox "on another site", which I took to mean one without the T-word. mufunyo: Even without trade, there can still be dilution.
Seriously, if it were me (legal battles considered), they'd definately be paying a premium price for it. No way no how would I have simply transfered the domain name to them. TTC really gets out of hand with their 'look and feel' and name things My response to them -> http://www.cmoo.com/snor/weeds/Tetris!.htm <G>