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 Bell, Boyd & Lloyd 32
10 Fitch Even Tabin and Flannery 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 Greenberg Traurig 12
21 Jones Day 12
21 Seyfarth Shaw 12
24 Baniak Pine and Gannon 11
24 Schiff Hardin 11
24 McDermott, Will & Emery 11
27 Michael Best & Friedrich 10
28 Wildman, Harrold, Allen & Dixon 9
28 Sonnenschein Nath & Rosenthal 9
28 Ladas and Parry 9
28 Gardner Carton 9
32 Vedder, Price, Kaufman & Kammholz 8
33 Lord, Bissell & Brook 6
33 Howrey 6
33 Katten Muchin Rosenman 6
36 Baker & McKenzie 4
36 Latham & Watkins 4
36 Winston & Strawn 4
39 DLA Piper Rudnick Gray Cary 3
39 Dykema Gossett 3
39 Chapman and Cutler 3
39 Ice Miller 3
43 Holland & Knight 2
44 Kelley Drye & Warren 1
44 Epstein Becker 1
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