Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Maine ranks #42 among US states for total patents filed in 2018, with 761 patents from 432 inventors across 119 cities. On a per-capita basis that is 0.6 patents per 1,000 residents, a standard benchmark for comparing state-level R&D intensity.

Top Cities in Maine 2018

Rank City Patents Inventors
#1 Fryeburg, ME 167 101
#2 Portland, ME 50 35
#3 Kennebunk, ME 33 12
#4 Rockport, ME 22 4
#5 Falmouth, ME 22 12
#6 York, ME 18 9
#7 Scarborough, ME 17 13
#8 South Berwick, ME 17 7
#9 Kennebunkport, ME 17 2
#10 Yarmouth, ME 15 5
#11 Boothbay Harbor, ME 15 1
#12 Wells, ME 14 6
#13 Gray, ME 14 5
#14 Saco, ME 12 9
#15 Windham Center, ME 11 2
#16 Gorham, ME 11 8
#17 North Berwick, ME 11 5
#18 Bangor, ME 10 7
#19 Sanford, ME 10 9
#20 Berwick, ME 9 3
#21 Arundel, ME 8 3
#22 Waterboro, ME 8 5
#23 South Portland, ME 8 7
#24 Gang H. Suhalim, ME 7 2
#25 Alfred, ME 7 3

Top Inventors in Maine 2018

Rank Inventor City Company Patents
1 Paul M. Lutjen Kennebunkport RTX (Raytheon) 16
2 Christopher W. Strock Boothbay Harbor RTX (Raytheon) 15
2 W. Davis Lee Rockport Varian Semiconductor Equipment Associates 15
#4 Timothy M. Davis Kennebunk RTX (Raytheon) 12
#4 Melissa Dandy Fryeburg Johnson & Johnson 12
#6 James G. Peterson Yarmouth Sandisk Technologies 11
#7 Richard S. Graf Gray IBM 9
#8 Dave G. Newport Windham Center Thermochem Recovery International 8
#8 Dmitriy A. Romanov Portland RTX (Raytheon) 8
#10 Frank Sinclair Hartland Varian Semiconductor Equipment Associates 7
#11 Mark J. Rogers Kennebunk RTX (Raytheon) 6
#11 Robert A. Clark Gang H. Suhalim Xerox 6
#13 Jeffrey Gniadek Oxford Senko Advanced Components 5
#13 Christophe Bucher Fryeburg As America 5
#13 Narendra Soman Fryeburg Abbott 5
#13 Stephen Francis Triano Fryeburg AT&T 5
#13 Prakasarao Mandadi Fryeburg Colgate-Palmolive 5
#13 Brian Duguay Berwick RTX (Raytheon) 5
#13 Michael S. Stevens Alfred RTX (Raytheon) 5
#13 Robert Bayer Orono Basf Se 5
#13 Philip Robert Rioux North Berwick RTX (Raytheon) 5
#13 Clifford M. Risher-Kelly Wells Medtronic 5
#23 Gary L. Grogg South Berwick RTX (Raytheon) 4
#23 Anthony B. Swift Waterboro RTX (Raytheon) 4
#23 Gregory F. Jacobs Sullivan Certainteed 4

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