U.S. provisional patent applications are assigned a unique serial number at the time of filing.
| Year | 1st Provisional |
|---|---|
| 2016 | – |
| 2015 | 124,715 |
| 2014 | 964,276 |
| 2013 | 848,274 |
| 2012 | 631,245 |
| 2011 | 460,301 |
| 2010 | 335,046 |
| 2009 | 203,947 |
| 2008 | 9,389 |
| 2007 | 877,460 |
| 2006 | 754,464 |
| 2005 | 639,450 |
| 2004 | 532,638 |
| 2003 | 437,173 |
| 2002 | 343,564 |
| 2001 | 256,730 |
| 2000 | 173,038 |
| 1999 | 113,787 |
| 1998 | 70,310 |
| 1997 | 34,487 |
| 1996 | 9,474 |
| 1995 | 1 |
Patent Librarian's Notebook 