Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Maine ranks #42 among US states for total patents filed all time, with 19,194 patents from 4,281 inventors across 343 cities. On a per-capita basis that is 14.1 patents per 1,000 residents, a standard benchmark for comparing state-level R&D intensity.

Top Cities in Maine All Time

Rank City Patents Inventors
#1 Fryeburg, ME 3,412 504
#2 Portland, ME 1,239 276
#3 Kennebunk, ME 566 89
#4 Scarborough, ME 497 117
#5 York, ME 476 86
#6 Falmouth, ME 474 83
#7 Gorham, ME 379 90
#8 Cape Elizabeth, ME 375 98
#9 Saco, ME 346 81
#10 South Portland, ME 330 82
#11 Yarmouth, ME 326 85
#12 Rockport, ME 301 23
#13 Wells, ME 283 34
#14 Orono, ME 269 77
#15 Sanford, ME 260 72
#16 Eliot, ME 254 45
#17 Lisbon, ME 251 24
#18 Biddeford, ME 248 60
#19 Kennebunkport, ME 234 38
#20 Gray, ME 230 62
#21 Frye Island, ME 211 59
#22 Auburn, ME 199 60
#23 Freeport, ME 194 37
#24 Brunswick, ME 190 67
#25 Sullivan, ME 187 1

Top Inventors in Maine All Time

Rank Inventor City Company Patents
1 Gregory F. Jacobs Sullivan Certainteed 187
2 John Gatzemeyer Fryeburg Colgate-Palmolive 162
3 Christopher W. Strock Boothbay Harbor RTX (Raytheon) 144
#4 Dimitry G. Grabbe Lisbon Amp 140
#5 Frank Sinclair Hartland Varian Semiconductor Equipment Associates 139
#6 Christophe Bucher Fryeburg As America 137
#7 Daniel R. Cohn Bridgton MIT 126
#8 Paul M. Lutjen Kennebunkport RTX (Raytheon) 122
#9 Jeffrey Gniadek Oxford Senko Advanced Components 114
#10 John T. Raffle Rockport Electrocore 92
#11 Thomas E. Clark Wells RTX (Raytheon) 85
#11 David W. Robertson Ogunquit Eli Lilly 85
#13 Brian Bloch Fryeburg Colgate-Palmolive 83
#14 John R. Williams Freeport Scroll Technologies 76
#14 Roland Gendron Limerick Theravance 76
#16 H. W. Crowley Eliot Roll Systems 75
#16 William M. Silver Nobleboro Cognex 75
#18 Anthony L. Gelardi Arundel Shape 74
#19 Daniel Warren Hawtof Arundel Corning Incorporated 73
#20 Timothy M. Davis Kennebunk RTX (Raytheon) 71
#21 W. Davis Lee Rockport Varian Semiconductor Equipment Associates 70
#22 John Marshall Sedgwick Polaroid 65
#23 William J. Wright Alfred Pitney Bowes 64
#24 Thomas James Wilson Falmouth Apple 63
#24 Robert A. Newman Surry Phoenix Biotechnology 63

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