The following table shows the ranking of Japanese IP law firm. The ranking is based on the following conditions.

  • Technical field:  Pharmaceutical (pharmaceutical composition, medicine, API, production method of thereof, etc.)
  • Status:  All (i.e., Japanese patent applications in 2016 (application date)).
  • First country:  All (i.e., patent applications with claiming priority of a Japanese application or a foreign application, or without claiming priority).
  • Count:  The number of Japanese patent applications handled by each Japanese IP law firm was counted (applicants of the patent applications are represented by each Japanese IP law firm or its members).
RankingNo.IP law firmWebsite
11091SHUSAKU・YAMAMOTO View
2548Aoyama & Partners View
3516Shimizu Patent Office View
4431SHIGA International Patent Office View
5395Hiraki & Associates View
6372Abe, Ikubo & Katayama View
7303SEIWA PATENT & LAW View
8273YUASA AND HARA View
9267Nakamura & Partners View
10230SAEGUSA & Partners View
11213Soei Patent & Law Firm View
12206TSUKUNI & ASSOCIATES View
13194KAWAGUTI & PARTNERS View
14182Takaoka IP Law View
15181Sonoda & Kobayashi View
16169Takashima International Patent Office View
17146Anderson Mori & Tomotsune View
18139Orion Patent Office View
19131The Patent Corporate Body Aruga Patent Office View
20122Kuzuwa & Partners View
21121SUBARU PATENT OFFICE View
22120Asamura Patent Office, p.c. View
23115KYOWA PATENT AND LAW OFFICE View
2497KIYOHARA & CO.,PATENT ATTORNEYS View
2593Shobayashi International Patent &Trademark Office View
2688TMI Associates View
2782HARAKENZO WORLD PATENT & TRADEMARK View
2876ONDA TECHNO Intl. Patent Attys View
2971SIKs & Co. View
3071Iwatani Patent Office View
3168Hirota & Associates View
3268Hirota, Nagare & Associates View
3368YuNeed International Patent Office View
3465Unius Patent Attorneys Office View
3563SUGIMURA & Partners View
3662IP Firm SHUWA View
3760HOSODA INTERNATIONAL PATENT OFFICE View
3860SUZUYE & SUZUYE Intellectual Property Law View
3959In-house patent attorney
4051TAIYO, NAKAJIMA & KATO View
4149LEXIA PARTNERS View
4249TOKYO ACTi International Patent and Trademark Office View
4349HIROE AND ASSOCIATES, patent professional corporation View
4447Kita-Aoyama International Patent Bureau View
4545SK Intellectual Property Law Firm View
4645OHNO & PARTNERS View
4744Shinjyu GLOBAL IP View
4844Okuyama & Sasajima View
4940Ashida & Kimura View
5040Nagoya International Patent Firm View
In preparing the table, a patent search expert conducted a patent search using patent classification and keywords (as necessary) in order to extract patents in specific technical field (here, Pharmaceutical field).
In the patent search, it was confirmed that a high-accuracy population (i.e., a population not including non-relevant fields) of patents was obtained. Subsequently, the population was used to create the table.

By entering the Firm name or Attorney name in the "Legal Representative Name" column of Patentscope (search system of WIPO), you can find the patent information handled by each Firm.

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