TM: The symbol TM is used to provide notice of a claim of common-law rights in a trade mark, especially for product in classes 1 to 34. A TM symbol usually is used in connection with an unregistered mark, to inform potential infringers that a term, slogan, logo or other indicator is being claimed as and believe is a trade mark. Use of the TM symbol does not guarantee that the owner’s mark will be protected under trade mark laws.
SM: The symbol SM functions similarly to the symbol TM, in that it is used to provide notice of a claim of common-law rights in a service mark, for services in classes 35 to 45, such as banking or legal services, rather than tangible products. Use of the SM symbol does not guarantee that the owner’s mark will be protected under trade mark laws.
®: The symbol circle-R is a notice of registered ownership used in many countries or regions to advise the public that a trade mark or service mark is registered and to provide constructive notice of the legal ownership status of the mark with which it is used. The circle-R symbol should be used only in connection with registered trade marks or service marks. In the United States, use of circle-R may be instituted only after registration of the mark is granted. Use of circle-R with an unregistered mark may result in claims of fraud where the owner demonstrates intent, knowing and willful misuse, and attempts to deceive or mislead consumers, or in other difficulties for the owner in trying to obtain and/or enforce its trademark rights.
There is some flexibility as to how and where to use the TM, SM or circle-R symbols. Typically, it is placed in the upper right-hand corner, in the lower right-hand corner, or level with the mark or logo itself. Each way is acceptable when displaying the appropriate symbol.
There is no specific requirement regarding where these symbols should be used, mostly they are placed adjacent to (or, in the case of a design mark, in) the upper right-hand corner of the mark, in superscript (raised) font. Example: COCA-COLA®. The TM, SM or circle-R symbol need only appear with the first or most prominent mention of a mark in all documentation, such as press releases, articles and company reports.
For word mark, when using your trademark within a body of text, use bold, italic, UPPERCASE, or a different font. Make your trademark look different from other surrounding words. Try to use your trademark as an adjective and not as a noun. For example, "Be hip, show style, wear NIKE® shoes".
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