Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Maryland ranks #21 among US states for total patents filed in 2020, with 7,024 patents from 4,116 inventors across 240 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 Maryland 2020

Rank City Patents Inventors
#1 Baltimore, MD 1,209 655
#2 Rockville, MD 498 272
#3 Gaithersburg, MD 361 222
#4 Bethesda, MD 337 224
#5 Silver Spring, MD 272 166
#6 Columbia, MD 265 143
#7 Potomac, MD 263 146
#8 Ellicott City, MD 263 165
#9 Germantown, MD 255 132
#10 Frederick, MD 205 93
#11 Bel Air, MD 108 62
#12 Timonium, MD 100 63
#13 Annapolis, MD 94 69
#14 North Potomac, MD 92 52
#15 Chevy Chase Section Five, MD 89 17
#16 College Park, MD 77 54
#17 Laurel, MD 76 52
#18 Severna Park, MD 70 32
#19 Cockeysville, MD 61 43
#20 Towson, MD 57 41
#21 Elkton, MD 55 33
#22 Clarksburg, MD 53 27
#23 Clarksville, MD 52 37
#24 Greenbelt, MD 52 40
#25 Bowie, MD 51 32

Top Inventors in Maryland 2020

Rank Inventor City Company Patents
1 Lisa Seacat DeLuca Baltimore Unstoppable Domains 83
2 Jeffrey RULE Chevy Chase Section Five Capital One Services 40
3 Nabil El-Hinnawy Columbia Newport Fab 38
#4 Kelley Anders East New Market IBM 35
#5 Gang Wang Frederick Google 33
#6 Charles E. Beller Baltimore IBM 24
#7 Dimiter S. Dimitrov Frederick The United States Of America, As Represented By The Secretary, Department Of Health And Human Services 18
#8 Michael V. Recker Gaithersburg Amazon 17
#9 Kenneth W. Kinzler Baltimore The Johns Hopkins University 15
#9 Donald Gerard Madden Columbia Alarm.Com Incorporated 15
#9 Bert Vogelstein Baltimore The Johns Hopkins University 15
#12 David McGrew Poolesville Cisco 13
#12 Wayne LUTZ Fort Washington Capital One Services 13
#14 Dwight Livingston Fallston Becton, Dickinson And 12
#14 David McAllister Bradley Bel Air Uatc 12
#14 Leslie S. Johnson Travilah Macrogenics 12
#14 James N. Kochenderfer Bethesda The United States Of America, As Represented By The Secretary, Department Of Health And Human Services 12
#14 Channasandra Ravishankar Clarksburg Hughes Network Systems 12
#19 Ronald C. Dzierwa Baltimore Digital Global Systems 11
#19 Daniel Carbajal Severna Park Digital Global Systems 11
#19 Andrew DeHennis Germantown Senseonics, Incorporated 11
#19 Justin X. Howe Baltimore Mastercard 11
#19 Oleksiy P. Sergyeyenko Baldwin Black & Decker 11
#19 Justin Hanes Baltimore The Johns Hopkins University 11
#19 Satyajit Roy Gaithersburg Hughes Network Systems 11

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