Effective as of August 3, 2019, Canadian patent agents no longer have the authority to represent Canadians before the United States Patent and Trademark Office (USPTO). All Canadian trademark applicants, registrants, or parties must be represented by a licensed U.S. trademark attorney. Why has this rule been put in place? The U.S. trademark register plays a major role in how businesses make legal decisions regarding their brands. The USPTO needs the right tools to ensure all registrants and applicants are in compliance with trademark law. For the benefit of its users, registers must maintain accuracy and integrity. The reason for this change is the mounting number of foreign-domiciled trademark registrants,