It’s not as bad as Facebook trying to trademark “book” but Google is trying to trademark Glass. Google already has the trademark for “Google Glass.” But trademarking “Glass” alone will be much more difficult. According to the Wall Street Journal, the U.S. Patent and Trademark Office (USPTO) might not go along with that. The Glass trademark is probably too similar to other glass trademarks or pending ones. Also, it may not be possible to trademark that word under the law.