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 |
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 |
