Nearest cities: Sierra Blanca, TX (5.6 miles ), Van Horn Rural, TX (5.7 miles ), Valentine, TX (6.1 miles) , Fort Hancock, TX (7.9 miles ), Fort Davis, TX (8.0 miles ), Toyah, TX (8.0 miles) , Balmorhea, TX (8.0 miles ), Dell City, TX (8.1 miles ).
Your rights in a trademark continue as long as you use the mark. Federal registrations are valid for ten years, but they may be renewed over and over, so long as you are still using the mark in interstate commerce. The oldest continuously registered mark dates back to the 1870's.
How long a patent lasts depends on the type of patent being issued and the country issuing the patent. For example, under recent changes in the laws, in the United States, patents are now granted for a term of 20 years from the date of application (14 years for design patents).