The justices will hear an appeal by the U.S. Patent and Trademark Office of lower court decision allowing the trademark because by adding “.com” to the generic word “booking” it became eligible for a trademark.

Under U.S. law, only terms that distinguish a particular product or service from others on the market can be trademarked. The agency noted that federal courts have rejected trademarks for other similar names, such as hotels.com, mattress.com and lawyers.com.