Still struggling to make a good name for itself with a skeptical American public, Google Glass is now struggling to get its literal name approved by the U.S. trademark office. The Wall Street Journal reports that the trademark office is pushing back against Googles plan to trademark the single word Glass for its wearable computerized eyeglasses. Google already has legal claim to Google Glass, but two issues are holding back the plans to trademark Glass. For one, the term is too similar to other products and so could cause confusion among consumers. The trademark offices letter argues that Google Glass is made of glass, and so therefore it cant be trademarked. Not so, Google responded in a 1,928-page letter.