[ilyanep]

IANAL but I'm pretty sure that a judge would never rule that there was possibility of confusion between all of these products on Zazzle and Pi Corporation. I think the real issue here is that Zazzle needs to exercise more discretion on which cease and desist letters it follows.

[sgdesign]

Yes, this definitely seems like a mistake on Zazzle's part.

And it's possible the artist may have been acting in good faith, and only wanted designs that actually copy his brand removed, not all designs featuring pi.

Edit: OK, it does seems like the artist is also abusing the system here, judging by his other trademark: http://news.artnet.com/art-world/artist-who-trademarked-pi-s...

[chrismcb]

ESPECIALLY when the C&D talked about copyright infringement.