Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

North Carolina ranks #13 among US states for total patents filed in 2021, with 11,519 patents from 5,924 inventors across 312 cities. On a per-capita basis that is 1.1 patents per 1,000 residents, a standard benchmark for comparing state-level R&D intensity.

Top Cities in North Carolina 2021

Rank City Patents Inventors
#1 Raleigh, NC 1,963 908
#2 Cary, NC 1,469 600
#3 Durham, NC 1,186 654
#4 Charlotte, NC 1,055 606
#5 Chapel Hill, NC 652 340
#6 Morrisville, NC 485 199
#7 Apex, NC 441 224
#8 Winston-Salem, NC 368 195
#9 Greensboro, NC 261 132
#10 Huntersville, NC 169 83
#11 Wake Forest, NC 161 94
#12 Mooresville, NC 136 64
#13 Wilmington, NC 125 87
#14 Hickory, NC 121 61
#15 Holly Springs, NC 100 59
#16 Fuquay-Varina, NC 96 52
#17 Asheville, NC 95 60
#18 Waxhaw, NC 92 58
#19 Pittsboro, NC 87 21
#20 Cornelius, NC 71 31
#21 Matthews, NC 68 40
#22 Concord, NC 67 36
#23 Clemmons, NC 64 38
#24 High Point, NC 60 37
#25 Hillsborough, NC 59 36

Top Inventors in North Carolina 2021

Rank Inventor City Company Patents
1 Russell Speight VanBlon Raleigh Lenovo (Singapore) Pte. 78
2 Martin G. Keen Cary IBM 65
3 John M. Ganci, Jr. Raleigh IBM 56
3 Aaron K. Baughman Cary IBM 56
#5 Jerome Henry Pittsboro Cisco 51
#6 Corville O. Allen Morrisville IBM 50
#7 Carlos M. Pignataro Cary Cisco 46
#8 Nathan J. Peterson Oxford Lenovo (Singapore) Pte. 43
#9 John Carl Mese Cary Lenovo (Singapore) Pte. 40
#10 Trudy L. Hewitt Cary IBM 38
#11 Nagendra Kumar Nainar Morrisville Cisco 36
#12 Mark Patrick Delaney Raleigh Lenovo (Singapore) Pte. 33
#13 Tianyi Gao Kirkwood Baidu Usa 32
#14 Al Chakra Apex IBM 30
#15 Andrew R. Freed Cary IBM 25
#15 Arnold S. Weksler Raleigh Lenovo (Singapore) Pte. 25
#17 Ruthie D. Lyle Durham IBM 24
#18 Joseph F. Denatale, Jr. Greensboro Ford 23
#18 Dawn E Fraser Fuquay-Varina Monsanto Technology 23
#20 John Weldon Nicholson Cary Lenovo (Singapore) Pte. 22
#20 Joshua T. Smith Mooresville IBM 22
#22 Matthew Meitl Durham X-Celeprint Limited 20
#23 Christopher Bower Raleigh X-Celeprint Limited 19
#23 Kevin Ahearn Nebo Berkshire Grey Operating Company 19
#23 Scott Wentao Li Cary Lenovo (Singapore) Pte. 19

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