Trademark Filing Basis 1a In-Use (when to claim)

A trademark filing basis forms the legal reason for filing the application, and may be i) in use (1A), ii) proposed use (1B) or iii) a priority from a foreign filing (44E 44D or 66). Choose Trademark Filing Basis 1A or 1(a) when your trademark is already in use in the marketplace. You will be required to provide the date of first use anywhere (includes advertising, online, etc.) and the date of first use in commerce (when you were selling or receiving payment, etc.).