China patent firms that work most with South Korea firms

Ranked by patent family observations each China firm shares with South Korea firms, 2013–2022. A family is counted once for each South Korea firm it was shared with, so the same family can appear more than once. Later years are left out because many filings are not published yet.

#	Firm	Family observations with South Korea firms	South Korea firms
1	China Patent Agent (H.K.) Ltd.	16,821	213
2	Liu Shen & Associates北京市柳沈律师事务所	15,456	213
3	NTD Patent & Trademark Agency Ltd.	10,959	196
4	Beijing Sanyou Intellectual Property Agency Ltd.北京三友知识产权代理有限公司	10,522	286
5	Shanghai Patent & Trademark Law Office, LLC.上海专利商标事务所有限公司	9,879	169
6	Beijing Unitalen Intellectual Property Co., Ltd.集佳知识产权代理有限公司	9,669	244
7	China Sinda Intellectual Property Ltd.中原信达知识产权代理有限责任公司	9,075	185
8	CCPIT Patent and Trademark Law Office中国贸促会专利商标事务所	8,049	212
9	Beijing King & Wood Mallesons	7,445	153
10	China Science Patent & Trademark Agent Ltd.中科专利商标代理有限责任公司	7,288	200
11	Beijing Linda Liu Intellectual Property Agency Office (General Partnership)	6,264	160
12	Lee and Li-Leaven IPR Agency Ltd.	6,139	120
13	BEIJING ZHONGZI LAW OFFICE	5,876	153
14	Beijing Kangxin Intellectual Property Agency Co., Ltd.北京康信知识产权代理有限责任公司	4,588	183
15	Leader Patent & Trademark Firm	4,379	187
16	Ming & Sure Intellectual Property Law Firm北京铭硕知识产权代理有限公司	3,972	165
17	AFD China Intellectual Property Law Office北京安信方达知识产权代理有限公司	3,959	181
18	Lung Tin Intellectual Property Agent Ltd.	3,444	177
19	Beijing Beyond Patent Law Office	3,024	212
20	Lecome Intellectual Property Agent Ltd.	3,011	127
21	Dragon Intellectual Property Law Firm北京银龙知识产权代理有限公司	2,796	205
22	Beijing East IP Ltd.北京东方亿思知识产权代理有限责任公司	2,630	107
23	Beijing DHLZ Intellectual Property Law LLC	2,607	32
24	Tee & Howe Intellectual Property Attorneys	2,410	102
25	China PAT Intellectual Property Office	2,406	146

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