Range of Number of Patents Asserted in New Section 337 Investigations by Number and Percentage of Investigations Filed (Updated Annually)
Fiscal year
1-2 patents
3-4 patents
5-6 patents
7-8 patents
9 or
more patents
2009 15 (57%) 8 (27%) 1 (4%) 5 (8%) 1 (4%)
2010 21 (41%) 15 (29%) 10 (20%) 2 (4%) 3 (6%)
2011 19 (28%) 20 (29%) 16 (24%) 10 (15%) 3 (4%)
2012 17 (38%) 14 (31%) 8 (18%) 4 (9%) 2 (4%)
2013 16 (44%) 7 (19%) 5 (14%) 6 (17%) 2 (6%)
2014 17 (47%) 12 (33%) 6 (17%)   1 (3%)
2015 11 (32%) 9 (27%) 10 (29%) 4 (12%)  
2016 20 (41%) 15 (31%) 10 (20%) 2 (4%) 2 (4%)
2017 13 (27%) 17 (35%) 16 (34%) 2 (4%) 0 (0%)
2018 25 (45%) 17 (30%) 12 (21%) 2 (4%) 0 (0%)
2019 7 (21%) 12 (35%) 13 (38%) 2 (6%) 0 (0%)
2020 16 (39%) 14 (34%) 11 (27%) 0 (0%) 0 (0%)
2021 15 (26%) 27 (47%) 13 (23%) 1 (2%) 1 (2%)
2022 16 (33%) 19 (39%) 12 (24%) 0 (0%) 2 (4%)
2023 9 (24%) 16 (43%) 11 (30%) 1 (3%) 0 (0%)
2024 19 (42%) 16 (36%) 10 (22%) 0 (0%) 0 (0%)
Source: USITC, 337Info.
NOTE: Percentage represents the percent of investigations that had any patent claims asserted.