The primary benefit of the trademark notice, like in copyright, is that it puts the public on notice that you are claiming rights to the mark. Using TM, SM, and ® is an effective way to tell the world that the mark is yours.
When should I put TM on my logo?
Usually, businesses will use the TM symbol to indicate their first usage or that they have applied for its registration. A trademark owner can use the TM symbol only after he/she has filed a trademark application with the Registrar of Trademarks.
What happens when you use a TM?
A trademark symbol (™), is a mark that represents goods, like clothing or sunglasses. This symbol indicates that you are claiming rights within that mark and will potentially deter others from using it. Additionally, the TM symbol can provide common law trademark rights to the user.