Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Kitchener, CA ranks #430 worldwide for total patents filed all time, with 7,449 patents from 1,348 inventors. Leading employers of inventors based in Kitchener, CA include Research In Motion Limited, Clearpath Robotics, Caterpillar.

Showing 1–50 of 1,348 inventors

Rank Inventor Primary Company Patents
1 Jason T. Griffin Research In Motion Limited 568
2 Michael S. Brown Research In Motion Limited 394
3 Ryan Christopher Gariepy Clearpath Robotics 82
#4 Joseph Michael Hofer Research In Motion Limited 73
#5 David P. Smith Caterpillar 66
#6 Christopher R. Wormald Blackberry Limited 64
#6 Christopher Lyle Bender Blackberry Limited 64
#8 Amir Keyvan Khandani Unknown 62
#9 Satnam Singh Maxtech Manufacturing 59
#10 Navid R. Zargari Rockwell Automation 56
#11 Daniel Adema Google 53
#11 Timothy Kyowski Research In Motion Limited 53
#13 Jennifer A. Coggan Xerox 50
#14 Jens Kristian Poulsen Blackberry Limited 49
#14 Andrew David Ellis GE 49
#16 Bogdan Frusina Dejero Labs 48
#17 Vahid Moosavi Blackberry Limited 46
#18 Yuan Xiao Rockwell Automation 45
#18 Peter Sweeney Primal Fusion 45
#20 Felipe Oliveira Simoes Research In Motion Limited 43
#21 Kurt D. Rueb Virtek Vision International 42
#21 Adrian Cooke Research In Motion Limited 42
#23 Lloyd Frederick Holland North 41
#23 James P. Shaffer Quantum Valley Ideas Laboratories 41
#25 Idris S. Aleem Google 34
#25 Stephen Arnold Devison Cognitive Systems 34
#27 Zhongyuan Cheng Rockwell Automation 33
#27 Robert Joseph Lombardi Blackberry Limited 33
#29 Christopher J. Mendes Geotab 31
#29 Yutaka Horiuchi Honda Motor Co. 31
#29 Nevine Maurice Nassif Ebeid Blackberry Limited 31
#32 Armen Garo Bakirtzian Intel 29
#32 Jeremy Jason Auger D2L 29
#32 David Clark Research In Motion Limited 29
#35 Abdul Rehman KFUPM 28
#35 Michael Perkins Christie Digital Systems Usa 28
#35 Harindra Manilal William Pioneer (Corteva) 28
#38 Brian John Cepuran D2L 27
#38 David Bajar Research In Motion Limited 27
#40 Norman Weatherhead Rockwell Automation 26
#40 Stanley Piotrowski Illinois Tool Works 26
#42 Robert L. Brennan onsemi 25
#43 JOSEPH ARTHUR SCHIPPER Intel 23
#43 Timothy Richard Tyhurst Research In Motion Limited 23
#43 Robert Kroeger Google 23
#46 Van Quy Tu Blackberry Limited 22
#46 Michael Maguire Research In Motion Limited 22
#46 Ning Ren Lexmark International 22
#46 Shreyas Potnis Google 22
#50 Roger Paul Bowman Blackberry Limited 21