When can I use the trademark symbols TM, SM, and ® ?
Source: Protecting Your Trademark Basic Facts About Trademarks, prepared by the United States Patent & Trademark Office
Each time you use your mark, it is best to use a designation with it. If registered, use an ® after the mark. If not yet registered, use TM for goods or SM for services, to indicate that you have adopted this as a trademark or service mark, respectively, regardless of whether you have filed an application with the USPTO. You may only use the registration symbol with the mark on or in connection with the goods/services listed in the federal trademark registration. However, no specific requirements exist as to the precise use of the “® ” symbol as to placement, e.g., whether used in a subscript or superscript manner. Note: Several foreign countries use “® ” to indicate that a mark is registered in that country. Use of the symbol by the holder of a foreign registration may be proper.
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