No! In the United States, trademark rights begin when you first use your trademark in connection with the sale of your product or the offer for sale of your service, not upon registration. Registering your trademark, however, better protects your rights by expanding your protection across the U.S. and by putting you in a stronger position in the event you discover someone infringing on your trademark. A registered trademark is also an asset to consider should you ever want to sell your company or entice investors.