All material subject to strictly enforced copyright laws. © 2022 Managing IP is part of the Euromoney Institutional Investor PLC group.

Rankings: The top firms for PCT work this year

concept image of setting a five star goal. increase rating or ranking, evaluation and classification idea. Top view. Flat lay.

Managing IP’s annual survey ranks the top Patent Cooperation Treaty filers in the main patenting jurisdictions. Data compiled by CPA Global

The tables below list the top Patent Cooperation Treaty (PCT) filing firms according to the number of PCT applications filed for national stage entry in 2019.

The tables are based on details of PCT applications available in software tool Filing Analytics, owned by CPA Global, part of Clarivate. To compile the tables, PCT applications with a priority date between January 1 and December 31 were extracted. These correspond to applications which entered national phase from January 1 to December 31 2019.

Once extracted these applications were sorted according to the law firm or patent agency that filed the PCT application, based on the "agent name" and "agent address" categories in the PCT form. A manual checking process ensures all applications filed by each firm are included, even when it used different names or addresses during the period in question.

The firms are listed in order of the number of applications filed in their jurisdiction. Firms with offices in more than one country may be included in the table in each jurisdiction. Firms are compiled based on how they are listed in the patent application.

The worldwide table ranks the firms with the most PCT applications globally. This compiles the filings of a firm's various offices around the world, increasing the rankings for firms in several locations.

Managing IP would like to thank CPA Global for compiling and verifying the data on which these tables are based. CPA Global is the world's leading IP management and technology company. Its IP One Data empowers customers with comprehensive, verified and reliable IP data.

The tables are provided for information only. Managing IP does not recommend or endorse any particular firms for PCT or other work.

Australia

Ranking

Firm

Filings

1

Spruson & Ferguson

184

2

Davies Collison Cave

150

3

Griffith Hack

127

4

FB Rice & Co

115

5

Phillips Ormonde & Fitzpatrick

94

6

FPA Patents (Freehills)

77

7

Wrays

62

8

Shelston IP

48

9

Watermark

47

10

Madderns

41


Brazil

Ranking

Firm

Filings

1

Dannemann Siemsen Advogados

47

2

Gusmão & Labrunie

38

3

Vilage Marcas E Patentes

29

4

Atem & Remer Advogados e Consultores

27

5

Kasznar Leonardos Propriedade Intelectual

16


Canada

Ranking

Firm

Filings

1

Gowling WLG

208

2

Norton Rose

185

3

Bereskin & Parr

178

4

Borden Ladner Gervais

98

5

Ridout & Maybee

95

6

Smart & Biggar

86

7

Robic

86

8

BCF

76

9

ADE & Company

59

10

Oyen Wiggs Green & Mutala

49


China

Ranking

Firm

Filings

1

Advance China I.P. Law Office (ACIP)

 广州华进联合专利商标代理有限公司

1637

2

Scihead Patent Agent

 广州三环专利代理有限公司

1634

3

Tsingyihua IP

1331

4

Beijing Beyond Attorneys at Law

北京品源专利代理有限公司

1325

5

Bestipr Intellectual Property Law Firm

 北京博思佳知识产权代理有限公司

1037

6

Dragon IP Law Firm

 北京银龙知识产权代理有限公司

1028

7

China PAT IP Office

北京派特恩知识产权代理事务所(普通合伙)

903

8

Purplevine IP Group

 紫藤知识产权集团

purple vine

845

9

China Wispro IP

 深圳市威世博知识产权代理事务所(普通合伙)

798

10

Beijing Sanyou IP Agency

 北京三友知识产权代理有限公司

793

11

TDIP & Partners (Beijing Tongdaxinheng)

749

12

Unitalen Attorneys At Law

 北京集佳知识产权代理有限公司

735

13

Liu Shen & Associates

北京市柳沈律师事务所

716

14

Tee & Howe IP Attorney

北京天昊联合知识产权代理有限公司

705

15

Cenfo Intellectual Property Agency

674

16

China Science Patent & Trademark Agent

中科专利商标代理有限责任公司

653

17

Leader Patent & Trademark Firm

北京同立钧成知识产权代理有限公司

652

18

Kangxin Partners

北京康信知识产权代理有限责任公司

640

19

Longsun Lead IP

北京龙双利达知识产权代理有限公司

616

20

ZBSD Patent

北京中博世达专利商标代理有限公司

589

21

Chofn IP

562

22

Beijing San Gao Yong Xin IP

 北京三高永信知识产权代理有限责任公司

557

23

Shenzhen Zhongyi Patent & Trademark Office

 深圳中一专利商标事务所

499

24

AFD China IP Law Office

北京安信方达知识产权代理有限公司

484

25

Shenzhen World Intellectual Property Agency

465


Finland

Ranking

Firm

Filings

1

Berggren Group

188

2

Kolster Oy Ab

117

3

Seppo Laine Oy

108

4

Papula-Nevinpat

80

5

Boco IP

41


France

Ranking

Firm

Filings

1

Cabinet Lavoix

410

2

Cabinet Plasseraud

346

3

Cabinet Beau de Loménie

330

4

REGIMBEAU

320

5

Cabinet Germain & Maureau

198

6

Marks & Clerk France

185

7

BREVALEX

166

8

Nony & Associés

163

9

Cabinet Lhermet La Bigne & Remy

137

10

IP TRUST innovation

136

11

Gevers France

118

12

Novagraaf

108

13

Cabinet Becker & Associés

106

14

Coralis & Harle Phelip

102

15

Santarelli

89


Germany

Ranking

Firm

Filings

1

Epping Hermann Fischer

416

2

Hoffmann Eitle

219

3

Schoppe Zimmermann Stöckeler & Zinkler

194

4

Eisenführ Speiser

194

5

Cohausz & Florack

182

6

Grünecker Kinkeldey Stockmair & Schwanhäusser

177

7

Zimmermann & Partner

168

8

Maiwald Patentanwalts

154

9

Meissner Bolte & Partner

136

10

Gramm Lins & Partner

129

11

Boehmert & Boehmert

124

12

Dreiss Patentanwälte

121

13

Loesenbeck Specht Dantz

121

14

Boehmert & Boehmert.

114

15

Hoeger Stellrecht & Partner

113


India

Ranking

Firm

Filings

1

Khurana & Khurana

130

2

K & S Partners

81

3

LexOrbis IP Practice

79

4

R K Dewan & Co.

71

5

Lakshmikumaran & Sridharan

61

6

S. Majumdar & Co.

61

7

Gopakumar Nair Associates

50

8

Krishna & Saurastri Associates

33

9

DePenning & DePenning

23

10

Rahul Chaudhry & Partners

22


Israel

Ranking

Firm

Filings

1

Ehrlich & Fenster

223

2

Reinhold Cohn Group

172

3

Pearl Cohen Zedek Latzer

132

4

Geyra Gassner IP Law

115

5

Luzzatto & Luzzatto

81

6

Webb & Co.

66

7

D. Kligler I.P. Services

65

8

Dr. Mark Friedman Ltd.

64

9

Dr. Eyal Bressler

52

10

Ben-Ami & Associates

45


Italy

Ranking

Firm

Filings

1

Jacobacci & Partners

315

2

Bugnion

277

3

Studio Torta

187

4

Barzano' & Zanardo

133

5

GLP

128

6

Modiano & Partners

126

7

Società Italiana Brevetti (SIB)

104

8

Notarbartolo & Gervasi

83

9

Brunacci & Partners

75

10

Cantaluppi & Partners

75


Japan

Ranking

Firm

Filings

1

Shiga International Patent Office

1864

2

Sakai International Patent Office

 特許業務法人酒井国際特許事務所

1635

3

Soei Patent & Law Firm

929

4

TAIYO NAKAJIMA & KATO

699

5

HARAKENZO World Patent & Trademark

699

6

ITOH International Patent Office

689

7

SUGIMURA & Partners

640

8

Aoyama & Partners

639

9

Fukami Patent Office

621

10

NII Patent Firm

509

11

S & S International (Suzuye)

453

12

Inamoto & Associates

450

13

Eikoh Patent Firm

438

14

Kisa Patent & Trademark Firm

427

15

Miyoshi International Patent Office

412

16

TMI Associates

396

17

S. Soga & Co.

374

18

Shobayashi International Patent & Trademark Office

367

19

Shinsei Patent Office

356

20

Seiwa Patent & Law

347


Netherlands

Ranking

Firm

Filings

1

V.O. Vereenigde

260

2

Nederlandsch Octrooibureau

251

3

Arnold & Siedsma

168

4

Exter Polak & Charlouis (EP&C)

119

5

Algemeen Octrooi- en Merkenbureau AOMB

99

6

De Vries & Metman

49

7

Los & Stigter

44

8

Vriesendorp & Gaade Octrooibureau B.V.

32

9

Patentwerk

29

10

Hoyng Rokh Monegier

24


Russia

Ranking

Firm

Filings

1

Kotlov, Dmitry Vladimirovich

124

2

Gorodissky & Partners

71

3

KUPTSOVA, Elena Vyacheslavovna

31

4

PATENTICA

26

5

YUS

20


South Korea

Ranking

Firm

Filings

1

Y. P. Lee, Mock & Partners

808

2

Bae Kim & Lee

700

3

YOU ME Patent & Law Firm

556

4

Envision Patent & Law Firm

427

5

YOON & LEE International Patent & Law Firm

415

6

KBK & Associates

400

7

Phil & Onzi Int'l Patent & Law Firm

358

8

Lee & Kwon Intellectual Law Group

348

9

Saeon Patent & Law Firm

326

10

NAWOO Patent & Law Firm

323

11

K.J. Lee Patent & Trademark Law Firm

(미화빌딩 이건주특허법률사무소)

302

12

DANA International Patent and Law Firm

288

13

SunYoung International Patent & Law Firm

284

14

Selim Intellectual Property Law Firm

275

15

ROYAL Patent & Law Firm

255


Spain

Ranking

Firm

Filings

1

PONS Patentes y Marcas, S.L.

105

2

ABG Patentes

94

3

Herrero & Asociados

92

4

ZBM Patents

85

5

Ungría Patentes y Marcas

70


Sweden

Ranking

Firm

Filings

1

Awapatent

271

2

Kransell & Wennborg

195

3

Zacco

158

4

Brann

111

5

Ström & Gulliksson

100


Switzerland

Ranking

Firm

Filings

1

Isler & Pedrazzini

84

2

Rentsch & Partner

84

3

P&TS IP

62

4

Hepp Wenger Ryffel

49

5

Andre Roland

46

6

Latscha Schöllhorn Partner

44

7

E Blum & Co

42

8

Frei Patent Attorneys

39

9

Givaudan Patents

34

10

PGA srl

33


UK

Ranking

Firm

Filings

1

D Young & Co.

344

2

Marks & Clerk

326

3

Dehns

275

4

HGF (nee Harrison Goddard Foote)

274

5

Mewburn Ellis

263

6

Reddie & Grose

176

7

Mathys & Squire

173

8

J.A. Kemp

173

9

Venner Shipley

160

10

Murgitroyd & Company

147

11

Appleyard Lees

147

12

Gill Jennings & Every

146

13

Barker Brettell

146

14

Haseltine Lake

145

15

Withers & Rogers

144

16

Page White & Farrer

119

17

Carpmaels & Ransford

106

18

UDL (nee Urquhart-Dykes & Lord)

104

19

EIP

101

20

Boult Wade Tennant

97

21

Potter Clarkson

97

22

Kilburn & Strode

91

23

Wilson Gunn

62

24

Keltie

60

25

Forresters

58


US

Ranking

Firm

Filings

1

Fish & Richardson

1159

2

Kilpatrick Townsend & Stockton

790

3

Foley & Lardner LLP

718

4

Wilson Sonsini Goodrich & Rosati

602

5

Schwegman Lundberg & Woessner

561

6

Knobbe Martens Olson & Bear

561

7

Patterson & Sheridan

523

8

Wolf Greenfield & Sacks

495

9

Holland & Hart

486

10

Dority & Manning

390

11

Cooley LLP

372

12

Harness Dickey & Pierce

360

13

Perkins Coie

353

14

Womble Carlyle Sandridge & Rice

317

15

Cantor Colburn

311

16

Marshall Gerstein & Borun

292

17

McDonnell Boehnen Hulbert & Berghoff

290

18

Haynes & Boone

286

19

Lee & Hayes

262

20

Schwabe Williamson & Wyatt

245

21

Michael Best & Friedrich

238

22

Meunier Carlin & Curfman

234

23

Fenwick & West

227

24

Morrison & Foerster

221

25

Norton Rose Fulbright

220

26

Dinsmore

215

27

Thomas Horstemeyer

212

28

Morgan Lewis & Bockius

212

29

Merchant & Gould

208

30

McCarter & English

204


more from across site and ros bottom lb

More from across our site

Sources say the Supreme Court’s decision to take on Sky v SkyKick puts uncertainty back into the mix, just when IP owners thought they knew what was what
Charles Feng, partner at East & Concord in Beijing, explains why filing for a trademark early is still a brand’s best bet
Counsel at IBM, Novartis, BMS and four other companies delve into whether the new Section 101 bill addresses their concerns
Clearance searches are especially important when counsel can’t rely on the USPTO’s opinion before key deadlines, say sources
VLSI case halted in Delaware; Netflix sues Bridgerton rip-off; Ex-GSK scientist escapes damages; US Copyright Office debuts new software; Abbvie scores Humira patent thicket win; Russia tables bill on illegal blocking of copyrighted content
An England and Wales High Court judgment over a disclosure error shows why law firms must never play a distant role when advising clients
Italy is in pole position to replace London as a central division host but must weather a political storm first
The senator’s proposed Section 101 legislation would cut down on exceptions to patent eligibility in the US
Ken Korea, founder of Colev Law and former head of US IP at Samsung, sets out the problems with anti-suit injunctions and the problem of getting rid of them
Thom Tillis and Patrick Leahy introduced a bill that would evaluate the need for recording examiner interviews, among other measures
We use cookies to provide a personalized site experience.
By continuing to use & browse the site you agree to our Privacy Policy.
I agree