USPTO 2013 utility patent grants (notes on country of assignment, invention class, government rights in patents)
In 2013, the USPTO issued 277,861 utility patents, a new record in terms of the numbers of patent grants, and an increase of 9.8 percent over 2012.*
Country of Assignment
Of the total, 126,574 (45.6 percent) were assigned to a US owner, a small increase in the percent held by US entities over 2012.