PTO Factoids
First patent issued in July 1790
Began numbering patents in 1836; already
4000 in existence at this date
Approx. 3100 PTP employees
In U.S. patent applications are held in
confidence until patent application is
published (within 18 months of filing)
Utility patent term of rights: 20 years from date
you first apply
Design patent term of rights: 14 years