This much is provable:, a hosted service that dubs itself the Global Hosted Operating SysTem, uses a slogan, "No Walls." Microsoft's new Seinfeld-powered Windows campaign pushes several slogans, including "Imagine No Walls." Sleep-deprived superreporter Kara Swisher tells us the gang claims trademark infringement on a pending trademark for "No walls." Our attempts to pull's trademark entry from the United States Patent and Trademark Office's searchable database returned no matches to's claim. Ball in your court, — post your USPTO documentation in the comments, or it didn't happen.