Snapchat creator Snap has sued the US Patent and Trademark Office (USPTO) for rejecting an application the company had filed to trademark the word “spectacles” in relation to its wearable of the same name. In a complaint spotted by The Verge, Snap claims its usage of the term “evokes an incongruity between an 18th-century term for corrective eyewear and Snap’s high-tech 21st-century smart glasses.”The complaint stems from an ongoing disagreement between Snap and the USPTO over whether “spectacles” is a term that can be applied to any pair of smart glasses. In an opinion the agency’s Trademark Trial and Appeal Board published in November, the USPTO said Snap’s use of Spectacles had failed to acquire the “distinctiveness” necessary for a trademark. “Spectacles is so commonly used to describe the nature of the product or competing products, rather than any particular source of the product(s),” the USPTO said at the time. In suing the U