Research the market in which you intend to use your trademark. Search the geographical area where the business is likely to find its customers and determine whether there is another business with the same name or logo that you intend to trademark. If no other business is using the name or logo, you can apply for trademark rights in the name and logo in that area simply by using it. If another business uses the same name or logo, you risk violating the other business's trademark rights.
Use your trademark in all facets of your business, such as on signs, packaging, business cards and, as is practical, on any other item associated with your business. This is the primary way you protect your trademark and enforce your rights against someone attempting to use your trademark or a similarly confusing trademark to compete with your business.
Submit an application to the USPTO to register your trademark, if you want the ultimate legal protection. This can be done via mail or online through the USPTO website. A federal trademark application requires the name of the owner of the trademark (either you or your company), the owner's address, a drawing of the mark, identification of your goods and a specimen indicating how the mark is used. Although you must actually be using the trademark in commerce before it can be registered, the USPTO permits the filing of an application based on an "intent to use" the trademark so you can start the registration process before using the trademark.
Submit an application to register your trademark in the state where your business is located and in any other state where you do business using the trademark. Each state has its own agency for trademark registration, such as the Secretary of State's office in California. The majority of states have enacted the Model State Trademark Bill, which is similar to the Lanham Act that governs federal trademark law. The trademark registration requirements in states using the Model State Trademark Bill are nearly the same as the USPTO requirements.