Top Patent Firms in Chicago, IL

Below are the firms with the most registered patent attorneys and agents in Chicago, IL.

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Rank Firm Patent Attorneys/Agents
1 Small firm, in-house, unaffiliated 452
2 Brinks, Hofer, Gilson & Lione 105
3 McAndrews Held and Malloy 77
4 Marshall Gerstein and Borun 64
5 Leydig Voit and Mayer 63
6 McDonnell Boehnen Hulbert & Berghoff 61
7 Kirkland & Ellis 35
8 Banner & Witcoff 34
9 Welsh and Katz 33
10 Fitch Even Tabin and Flannery 32
10 Bell, Boyd & Lloyd 32
12 Cook Alex McFarron Manzo Cummings and Mehler 25
12 Jenner & Block 25
14 Barnes & Thornburg 23
15 Greer Burns and Crain 19
16 Foley & Lardner 16
17 Jenkens & Gilchrist 15
17 Mayer, Brown, Rowe & Maw 15
19 Wood Phillips Katz Clark and Mortimer 14
20 Sidley Austin 13
21 Seyfarth Shaw 12
21 Greenberg Traurig 12
21 Jones Day 12
24 McDermott, Will & Emery 11
24 Baniak Pine and Gannon 11
24 Schiff Hardin 11
27 Michael Best & Friedrich 10
28 Ladas and Parry 9
28 Gardner Carton 9
28 Wildman, Harrold, Allen & Dixon 9
28 Sonnenschein Nath & Rosenthal 9
32 Vedder, Price, Kaufman & Kammholz 8
33 Howrey 6
33 Katten Muchin Rosenman 6
33 Lord, Bissell & Brook 6
36 Latham & Watkins 4
36 Winston & Strawn 4
36 Baker & McKenzie 4
39 DLA Piper Rudnick Gray Cary 3
39 Dykema Gossett 3
39 Ice Miller 3
39 Chapman and Cutler 3
43 Holland & Knight 2
44 Kelley Drye & Warren 1
44 Epstein Becker 1
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