Patent Bots recently announced its third annual Patent Quality Rankings of top patent law firms. Last month, we unveiled the
Top 50 Patent Firms.
Today, we'll announce the Top 10 firms in each USPTO Tech Center.
We used our advanced machine learning software to review every patent issued – over 300,000! – by the USPTO in the past year.
We then ranked patent firms in each Tech Center based on the average number of numbering, antecedent basis, and word support errors detected in their patents. Our rankings are based only on the above errors and do not address many other important aspects of patent quality.
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Now, on to the rankings!
2022 Patent Quality Rankings: Top 10 Firms by USPTO Tech Center.
Keep scrolling to view the Top 10 Firms in every USPTO Tech Center. Or, select a Tech Center of interest from the list to jump to that section.

Top 10 Patent Firms in Tech Center 1600.
Technology Center 1600 covers patent applications in the fields of Biotechnology and Organic fields. Congratulations to Tarolli, Sundheim, Covell & Tummino for earning the top Patent Bots Quality Ranking in Tech Center 1600 for 2022!
Rank | Law Firm | No. of Issued Patents | Quality Score |
1 | Tarolli, Sundheim, Covell & Tummino LLP | 50 | 99.9 |
2 | K&L Gates LLP | 124 | 97.7 |
3 | W&C IP | 102 | 96.7 |
4 | Oblon, McClelland, Maier & Neustadt, L.L.P. | 198 | 95.2 |
5 | Wenderoth, Lind & Ponack, L.L.P. | 138 | 92.6 |
6 | Riverside Law LLP | 78 | 91.9 |
7 | Norton Rose Fulbright US LLP | 109 | 87.2 |
8 | Stinson LLP | 62 | 85.8 |
9 | Dentons US LLP | 467 | 85.2 |
10 | Nixon & Vanderhye P.C. | 129 | 84.4 |
Top 10 Patent Firms in Tech Center 1700.
Technology Center 1700 covers patent applications in the fields of Chemical and Materials Engineering fields. Congratulations to Amin, Turocy & Watson for earning the top Patent Bots Quality Ranking in Tech Center 1700 for 2022!
Rank | Law Firm | No. of Issued Patents | Quality Score |
1 | Amin, Turocy & Watson, LLP | 81 | 97.6 |
2 | ScienBiziP, P.C. | 76 | 96.9 |
3 | Lee IP Law, P.C. | 72 | 96.5 |
4 | Burr & Brown, PLLC | 125 | 96.1 |
5 | McDermott Will & Emery LLP | 195 | 95.4 |
6 | McGarry Bair PC | 77 | 94.4 |
7 | Greenblum & Bernstein, P.L.C. | 304 | 91.5 |
8 | Thorpe North & Western | 146 | 91.2 |
9 | Baker Botts L.L.P. | 97 | 90.8 |
10 | Servilla Whitney LLC | 54 | 90.7 |
Top 10 Patent Firms in Tech Center 2100.
Technology Center 2100 covers patent applications in the fields of Computer Architecture Software and Information Security. Congratulations to Holland & Hart for earning the top Patent Bots Quality Rankings in Tech Center 2100 for 2022!
Rank | Law Firm | No. of Issued Patents | Quality Score |
1 | Holland & Hart LLP | 132 | 99.6 |
2 | Keller Jolley Preece | 62 | 98.5 |
3 | Trop, Pruner & Hu, P.C. | 79 | 98.3 |
4 | Patent Law Works LLP | 56 | 95.5 |
5 | Hanley, Flight & Zimmerman, LLC | 108 | 95.5 |
6 | Renaissance IP Law Group LLP | 62 | 93.8 |
7 | Artegis Law Group, LLP | 64 | 93.7 |
8 | Withrow & Terranova, PLLC | 65 | 93.6 |
9 | Compass IP Law PC | 93 | 93.6 |
10 | Zilka-Kotab, P.C. | 137 | 93.1 |
Top 10 Patent Firms in Tech Center 2400.
Technology Center 2400 covers patent applications in the fields of Computer Networks, Multiplex, Cable and Cryptography/Security. Congratulations to Harrity & Harrity for earning the top Patent Bots Quality Ranking in Tech Center 2400 for 2022!
Rank | Law Firm | No. of Issued Patents | Quality Score |
1 | Harrity & Harrity, LLP | 152 | 99.7 |
2 | Edell, Shapiro & Finnan, LLC | 156 | 99.6 |
3 | Holland & Hart LLP | 312 | 99.3 |
4 | Compass IP Law PC | 57 | 99.1 |
5 | Zilka-Kotab, P.C. | 53 | 98.7 |
6 | Osha Bergman Watanabe & Burton LLP | 213 | 94.4 |
7 | Guntin & Gust, PLC | 216 | 93.8 |
8 | Lee & Hayes, P.C. | 298 | 91.7 |
9 | Behmke Innovation Group LLC | 99 | 91.3 |
10 | Qualcomm Incorporated | 234 | 90.8 |
Top 10 Patent Firms in Tech Center 2600.
Technology Center 2600 covers patent applications in the fields of Communications. Congratulations to Harrity & Harrity for earning the top Patent Bots Quality Ranking in Tech Center 2600 for 2022!
Rank | Law Firm | No. of Issued Patents | Quality Score |
1 | Harrity & Harrity, LLP | 62 | 99.8 |
2 | Guntin & Gust, PLC | 92 | 99.0 |
3 | Pierce Atwood LLP | 111 | 98.6 |
4 | Holland & Hart LLP | 107 | 98.3 |
5 | Keller Jolley Preece | 70 | 97.7 |
6 | Alleman Hall Creasman & Tuttle LLP | 112 | 97.6 |
7 | Cha & Reiter, LLC | 142 | 96.1 |
8 | Keating & Bennett, LLP | 58 | 93.7 |
9 | Kile Park Reed & Houtteman PLLC | 67 | 93.7 |
10 | Chip Law Group | 338 | 93.5 |
Top 10 Patent Firms in Tech Center 2800.
Technology Center 2800 covers patent applications in the fields of Semiconductors, Electrical and Optical Systems and Components. Congratulations to GTC Law Group for earning the top Patent Bots Quality Ranking in Tech Center 2800 for 2022!
Rank | Law Firm | No. of Issued Patents | Quality Score |
1 | GTC Law Group PC & Affiliates | 72 | 99.9 |
2 | Patent Capital Group | 113 | 99.3 |
3 | Robinson Intellectual Property Law Office | 88 | 98.2 |
4 | The Marbury Law Group PLLC | 177 | 97.2 |
5 | Vierra Magen Marcus LLP | 107 | 97.1 |
6 | Holland & Hart LLP | 234 | 96.9 |
7 | Thompson Hine LLP | 81 | 96.3 |
8 | Chip Law Group | 222 | 96.1 |
9 | Green, Howard & Mughal LLP | 102 | 95.2 |
10 | Arch & Lake LLP | 89 | 93.5 |
Top 10 Patent Firms in Tech Center 3600.
Technology Center 3600 covers patent applications in the fields of Transportation, Electronic Commerce, Construction, Agriculture, Licensing and Review. Congratulations to Harrity & Harrity for earning the top Patent Bots Quality Ranking in Tech Center 3600 for 2022!
Rank | Law Firm | No. of Issued Patents | Quality Score |
1 | Harrity & Harrity, LLP | 116 | 99.6 |
2 | Alleman Hall Creasman & Tuttle LLP | 88 | 99.0 |
3 | Chip Law Group | 55 | 98.9 |
4 | The Small Patent Law Group LLC | 99 | 98.3 |
5 | Darrow Mustafa PC | 81 | 97.9 |
6 | Posz Law Group, PLC | 70 | 95.4 |
7 | Botos Churchill IP Law LLP | 78 | 94.9 |
8 | Hanley, Flight & Zimmerman, LLC | 160 | 94.7 |
9 | Keating & Bennett, LLP | 68 | 94.7 |
10 | Oliff PLC | 470 | 94.3 |
Top 10 Patent Firms in Tech Center 3700.
Technology Center 3700 covers patent applications in the fields of Mechanical Engineering, Manufacturing and Products. Congratulations to Posz Law Group for earning the top Patent Bots Quality Ranking in Tech Center 3700 for 2022!
Rank | Law Firm | No. of Issued Patents | Quality Score |
1 | Posz Law Group, PLC | 149 | 99.5 |
2 | McCoy Russell LLP | 306 | 99.3 |
3 | JCIPRNET | 165 | 99.3 |
4 | Amin, Turocy & Watson, LLP | 53 | 97.0 |
5 | Shook, Hardy & Bacon L.L.P. | 104 | 96.4 |
6 | Alleman Hall Creasman & Tuttle LLP | 112 | 96.4 |
7 | Mayer & Williams PC | 87 | 96.3 |
8 | Osha Bergman Watanabe & Burton LLP | 178 | 96.2 |
9 | KED & Associates LLP | 114 | 95.4 |
10 | McGarry Bair PC | 118 | 95.0 |
Patent Quality Rankings Methodology.
The Patent Quality Rankings are based only on average errors in issued patents and don't address other important aspects of patent quality.
For purpose of computing quality scores, we used only numbering errors, antecedent basis errors, and word support errors (words that don't appear in the detailed description).
Although we may over- or under-count errors in an individual patent, the average number of errors across all of a firm's patents is a good indicator of the overall quality of the firm's work.
Learn more about our methodology.