Top 100 Patent Firms

Interested in patent law? Many firms claim to do patent work but here are the firms with the registered patent attorneys and agents to back up that claim. Finnegan Henderson wins the top honors in with 276 registered attorneys and agents.

Only 20% of the patent attorneys and agents in the U.S. work for these 100 firms. About a third of the remaining agents and attorneys are not affiliated with any firm or company, working as solo practioners. The remainder, about 55% of all patent attorney and agents, work for corporations, government agencies or smaller firms.

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Rank Firm Patent Attorneys/Agents
1 Finnegan, Henderson, Farabow, Garrett & Dunner 276
2 Fish & Richardson 246
3 Jones Day 168
4 Kenyon & Kenyon 155
5 Foley & Lardner 151
6 Knobbe, Martens 139
7 Townsend and Townsend 138
8 Ropes & Gray 134
9 Brinks Hofer Gilson & Lione 122
10 Morrison & Foerster 114
11 Howrey 113
12 Fitzpatrick, Cella, Harper & Scinto 106
13 Morgan, Lewis & Bockius 104
14 Alston & Bird 101
15 McDermott, Will & Emery 98
16 Harness Dickey and Pierce 97
17 Fulbright & Jaworski 94
18 Baker Botts 92
19 Merchant and Gould 91
20 Kirkland & Ellis 84
21 Sterne Kessler Goldstein & Fox 83
22 Oblon Spivak McClelland Maier and Neustadt 82
23 Greenberg Traurig 80
24 McAndrews Held and Malloy 78
25 Woodcock Washburn Kurtz MacKiewicz and Norris 76
26 Banner & Witcoff 75
27 Leydig Voit and Mayer 74
28 Wilson Sonsini Goodrich & Rosati 73
29 Sughrue Mion 72
30 Sidley Austin 69
31 Blakely Sokoloff Taylor and Zafman 67
31 Wilmer Cutler Pickering Hale and Dorr 67
33 Morgan & Finnegan 66
33 Pillsbury Winthrop Shaw Pittman 66
35 Marshall Gerstein and Borun 64
35 Darby and Darby 64
35 Goodwin Procter 64
38 McDonnell Boehnen Hulbert & Berghoff 62
39 Schwegman Lundberg Woessner and Kluth 60
40 Perkins Coie 59
41 Buchanan Ingersoll 58
42 Hunton & Williams 56
42 Lerner David Littenberg Krumholz and Mentlik 56
44 Barnes & Thornburg 54
45 Dorsey & Whitney 53
45 Kilpatrick Stockton 53
45 Cooley Godward 53
45 Kirkpatrick & Lockhart Nicholson Graham 53
49 King & Spalding 52
50 Michael Best & Friedrich 51
50 Connolly Bove Lodge & Hutz 51
50 Akin Gump Strauss Hauer & Feld 51
53 Cantor Colburn 50
53 Christie Parker and Hale 50
53 Birch Stewart Kolasch and Birch 50
56 Orrick, Herrington & Sutcliffe 49
57 Wolf, Greenfield & Sacks 48
57 Duane Morris 48
59 Mintz, Levin, Cohn, Ferris, Glovsky 47
59 Klarquist Sparkman 47
61 DLA Piper Rudnick Gray Cary 46
61 Fay Sharpe Fagan Minnich and McKee 46
63 Venable 44
63 Fitch Even Tabin and Flannery 44
63 Workman Nydegger and Seeley 44
66 Dickstein Shapiro Morin & Oshinsky 43
66 Paul, Hastings, Janofsky & Walker 43
68 Brooks and Kushman 42
68 Reed Smith 42
68 Nixon Peabody 42
71 Frommer Lawrence and Haug 41
71 Heller Ehrman 41
73 Edwards Angell Palmer & Dodge 40
74 Hamilton Brook Smith and Reynolds 39
74 Hogan & Hartson 39
74 Senniger Powers Leavitt and Roedel 39
74 Proskauer Rose 39
74 Oliff & Berridge 39
74 Shook, Hardy & Bacon 39
80 Baker & McKenzie 37
80 Wood Herron and Evans 37
80 Fenwick & West 37
83 Woodard Emhardt Naughton Moriarty and McNett 36
83 Conley Rose and Tayon 36
83 Patterson & Sheridan 36
86 Bell, Boyd & Lloyd 35
86 Seed Intellectual Property Law Group 35
86 Ratner Prestia 35
86 Drinker Biddle & Reath 35
86 Snell & Wilmer 35
91 Lee & Hayes 34
91 Dechert 34
93 Weil, Gotshal & Manges 33
93 Christensen O'Connor Johnson Kindness 33
93 Welsh and Katz 33
93 Brown Raysman 33
93 Greenblum and Bernstein 33
98 Beyer Weaver & Thomas 32
98 Thomas Kayden Horstemeyer and Risley 32
98 Vinson & Elkins 32
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