(706) 638-1453. Walker County originated in 1833. Drawn from the original Cherokee County and part of Murray County, the region owes its name to Major Freeman Walker of Augusta, a lawyer and U.S. senator. Although residents first called the county seat by its Indian name, Chattooga, they later renamed it to honor the Marquis de Lafayette.
Once a patent is issued, a maintenance fee must be paid on the 4th, 8th, and 12th anniversaries of the date of issuance. You have to pay maintenance fees. http://www.uspto.gov/patents/process/maintain.jsp Also, patents are not self-enforcing.
US Patent Renewal Rules. US patent renewal/maintenance fees are only due three times during their lifetime. They are also only payable after the patent has been granted. The first fee is due three years and six months after grant, and its payment permits the patent to remain in force beyond the fourth anniversary of grant. The second fee is payable by seven years and six months after grant, and the third by eleven years and six months.