We were highly evaluated in Asialaw 2024 Rankings
In Asialaw 2024 Rankings, our firm was highly ranked in the following categories, and the following attorneys and patent attorneys were selected as leading lawyers.

Practice Area Rankings
Intellectual property：Outstanding
Pharmaceuticals and life sciences：Recommended
Dispute resolution：Highly recommended
Restructuring and insolvency：Highly recommended

Industry Sector Rankings
Pharmaceuticals and life sciences：Recommended

Practitioners
Elite practitioner：Eiji Katayama
Distinguished practitioner： Makoto Hattori
Notable practitioner：Junichi Kitahara　 Mami Hino

We were highly evaluated in Who’s Who Legal: IP 2024
The following attorneys were selected as being among the highest-ranked Lawyers in Who’s Who Legal: Thought Leaders – IP 2024 (Law Business Research).

IP – Patents Agents & Attorneys
Mami Hino

IP – Patents
Eiji Katayama　　Junichi Kitahara

Mami Hino named a WIPR Leader 2024 (Japan)
Mami Hino was named a WIPR Leader 2024 as one of the leading IP practitioners in Japan, in the WIPR Leaders 2024 edition announced by Newton Media Ltd.

We were highly recognized in IP STARS 2024
In IP STARS 2024 published by Managing IP Research Team, our firm was highly evaluated in the following category, and the following attorneys and patent attorneys were recognized as leading intellectual property specialists.

Patent disputes – domestic firms (2024) : Tier 1
Patent prosecution – domestic firms (2024) : Tier 3

Patent star 2024：Eiji Katayama　Hiroshi Kobayashi　Mami Hino　Naho Ebata　Shimako Kato
Trade mark star 2024：Naho Ebata

We were awarded “Restructuring and Insolvency Law Firm of the Year” at the ALB Japan Law Awards 2024

Our firm was named Winner of the following category at the ALB Japan Law Awards 2024 held by Asian Legal Business (ALB),  an international legal journal of Thomson Reuters Group.

－Restructuring and Insolvency Law Firm of the Year

We were highly recognized in IAM Patent 1000 (2024)

In the IAM Patent 1000: The World’s Leading Patent Professionals 2024 organized by Law Business Research, our firm ranked in the following categories, and our attorneys and patent attorneys were highly evaluated.

Domestic: Litigation: Gold
Domestic: Prosecution: Silver
Domestic: Transactions: Highly-recommended

Ranked attorneys:
【Luminaries】
Eiji Katayama

【Individuals: Litigation】
Junichi Kitahara (Gold)　Hirokazu Honda (Silver)　Makoto Hattori (Silver)
Mami Hino (Gold)　Naho Ebata (Silver)　Shimako Kato (Silver)　Tomohiro Yoneyama (Bronze)

【Individuals: Prosecution】
Hiroshi Kobayashi (Gold)

【Individuals: Transactions】
Emiko Maki (Recommended)

Mami Hino won the Top 100 Women in Litigation in Intellectual property for the Benchmark Litigation Asia-Pacific 2024

Mami Hino, a patent attorney and a registered foreign law lawyer of our firm, won the Top 100 Women in Litigation in Intellectual property for the 2024 edition of Benchmark Litigation Asia-Pacific.

We were highly evaluated in Benchmark Litigation Asia-Pacific 2024 

In Benchmark Litigation Asia-Pacific 2024 edition, our firm was highly evaluated in the following category, and the following attorneys and patent attorney were selected as Litigation Stars and Future Star.

Law Firm Ranking:  Intellectual Property – Tier1

Litigation Star:  Eiji Katayama    Junichi Kitahara    Makoto Hattori     Mami Hino

Future Star:  Shoichiro Kajinami

Our attorneys were recognized in Best Lawyers: Ones to Watch in Japan™ 2025 Edition
In Best Lawyers: Ones to Watch in Japan™ 2025 edition, the following attorneys of our firm were recognized in each practice areas.

Arbitration and Mediation
Koichiro Sato

Corporate and Mergers and Acquisitions Law
Kippo Shibayama　　Hitomi Onishi　　Wataru Takagishi　　Naotada Yokota

Insolvency & Reorganization Law
Kentaro Sato

We were highly evaluated in The Best Lawyers in Japan™ 2025 Edition
In The Best Lawyers in Japan™ 2025 edition, the following attorneys and patent attorneys of our firm were recognized in each practice areas. In addition,  Hisashi Ito received “Best Lawyer of the Year” in Insolvency & Reorganization.

Antitrust / Competition Law
Emiko Maki　　Serina Matsuda

Banking and Finance Law
Masahiro Otsuki

Corporate and Mergers and Acquisitions Law
Yasuhiko Ikubo　　Hirofumi Kato　　Toshiyasu Suzaki

Insolvency & Reorganization Law
Eiji Katayama　　Hisashi Ito   (Best Lawyer of the Year)　　Isao Saiki　　Junichi Kitahara

Kazuyuki Taguchi　　Hideto Sasaki　　Hirofumi Kato

Intellectual Property Law
Eiji Katayama　　Junichi Kitahara　　Hirokazu Honda　　Makoto Hattori

Mami Hino　　Naho Ebata　　Kaoru Kuroda　　Tsukasa Iguchi

Life Sciences Practice
Mami Hino　　Maki Yoshimitsu

Litigation
Yasuhiko Ikubo　　Eiji Katayama　　Isao Saiki　　Junichi Kitahara

Mami Hino　　Tomohiro Yoneyama

Patent Law
Sumiko Kobayashi　　Hiroshi Kobayashi　　Norio Ohmori　　Shimako Kato

Megumu Kurokawa　　Nobushige Furuhashi　　Yasuhito Suzuki　　Tomohisa Sugiyama

Kyoko Tamura　　Rikita Karakawa

Hisashi Ito named to Insolvency Lawyer of the Year in Japan – 2024
Hisashi Ito was recognized as Insolvency Lawyer of the Year in Japan in “2024 Global Law Experts Annual Awards”.

We were highly evaluated in Who’s Who Legal: Life Sciences 2024
The following attorneys were selected as being among the highest-ranked Lawyers in Who’s Who Legal: Life Sciences 2024 (Law Business Research).

Life Sciences – Patent Litigation
Eiji Katayama　　Mami Hino

We were highly evaluated in Chambers Global 2024

In Chambers Global 2024 (Chambers & Partners), our firm was ranked Band 1 in Intellectual Property: Domestic in Japan, and the following lawyers and patent attorneys were highly evaluated.

Please check the website of Chambers & Partners for more details.

Intellectual Property: Domestic: Band 1
Lawyers:  Eiji Katayama   Junichi Kitahara   Makoto Hattori
Benrishi:  Mami Hino

We were highly evaluated in The Legal 500 (2024)
In The Legal 500 Asia Pacific (2024), our firm was chosen as a top tier firm in the following categories, and the following attorneys and patent attorney were selected as “Leading Individuals”.

Intellectual Property: Independent Local Firms: Tier 1
Leading Individuals: Bengoshi:  Eiji Katayama    Junichi Kitahara    Makoto Hattori
Leading Individuals: Benrishi:  Hiroshi Kobayashi    Mami Hino

Restructuring And Insolvency: Independent Local Firms: Tier 2
Leading Individuals: Bengoshi:  Eiji Katayama
Recommended: Eiji Katayama     Hisashi Ito     Kazuyuki Taguchi     Hirofumi Kato     Rikita Karakawa
Other key lawyers: Hideto Sasaki     Koichiro Sato     Naotada Yokota

Dispute Resolution: Independent Local Firms: Tier 3
Recommended: Eiji Katayama    Junichi Kitahara    Hiroshi Kobayashi    Makoto Hattori
Nodoka Nakamura     Tomohiro Yoneyama     Shoichiro Kajinami

We were highly evaluated in Chambers Asia-Pacific 2024
In Chambers Asia-Pacific 2024（Chambers & Partners）, our firm was highly evaluated in the following category, and the following lawyers and patent attorneys were highly evaluated.
Please check the website of Chambers & Partners  for more details.

Intellectual Property (domestic)  Band 1

Ranked lawyers: Eiji Katayama, Junichi Kitahara, Makoto Hattori and Mami Hino

Junichi Kitahara and Hiroshi Kobayashi named to IAM Global Leaders 2024
Junichi Kitahara and Hiroshi Kobayashi have been ranked in the IAM Global Leaders 2024.

We were highly evaluated in Asialaw 2023/2024
In Asialaw 2023/2024, our firm was highly ranked in the following categories, and the following attorneys and patent attorneys were selected as leading lawyers.

Intellectual property…Outstanding
Pharmaceuticals and life sciences…Recommended
Dispute resolution…Highly recommended
Restructuring and insolvency…Highly recommended

Ranked lawyers: Eiji Katayama, Junichi Kitahara, Makoto Hattori and Mami Hino

Mami Hino named to WIPR Leaders 2023 (Japan)
Mami Hino was recognized as one of the leading IP lawyers in WIPR Leaders 2023 in Japan.

We were highly recognized in IP Stars 2023
In IP STARS 2023, our firm was highly evaluated in the following category, and the following attorneys and patent attorneys were recognised as leading intellectual property specialists.

Patent disputes – domestic firms (2023) : Tier 1
Patent prosecution – domestic firms (2023) : Tier 3

Patent star 2023：Eiji Katayama　Hiroshi Kobayashi　Mami Hino　Naho Ebata　Shimako Kato
Trade mark star 2023：Naho Ebata
Top 250 Women in IP 2023：Shimako Kato

We were highly recognized in IAM Patent 1000 (2023)

In IAM Patent 1000 (2023) organized by Law Business Research, our firm ranked in the following categories, and our attorneys and patent attorneys were highly evaluated.

Domestic: Litigation: Gold
Domestic: Prosecution: Silver
Domestic: Transactions: Highly-recommended

Ranked lawyers:
【Individuals: Litigation】
Eiji Katayama　Junichi Kitahara (Gold)　Hirokazu Honda (Silver)　Makoto Hattori (Silver)
Mami Hino (Silver)　Shimako Kato (Bronze)　Tomohiro Yoneyama (Bronze)

【Individuals: Prosecution】
Hiroshi Kobayashi (Gold)

【Individuals: Transactions】
Emiko Maki (Recommended)

We were highly evaluated in Benchmark Litigation Asia-Pacific 2023

In Benchmark Litigation Asia-Pacific 2023 Rankings, our firm was highly evaluated in the following category, and the following attorneys and patent attorney were selected as Litigation Stars and Future Star.

Law Firm Ranking:  Intellectual Property – Tier1

Litigation Star:  Eiji Katayama,  Junichi Kitahara,  Makoto Hattori  and  Mami Hino

Future Star:  Shoichiro Kajinami

Shimako Kato was selected as Managing IP’s Top 250 Women in IP 2023
Shimako Kato was selected as Managing IP’s Top 250 Women in IP 2023 (Delinian Limited).

Kentaro Sato was selected as The Best Lawyers: Ones to Watch in Japan 2024
Kentaro Sato was selected as The Best Lawyers: Ones to Watch in Japan 2024 in the category of Insolvency and Reorganization Law.

We were highly evaluated in The Best Lawyers® in Japan 2024 Edition
In The Best Lawyers® in Japan 2024 edition, the following attorneys and patent attorneys of our firm were recognized in each practice areas. In addition,  Hisashi Ito received “Best Lawyer of the Year” in Insolvency & Reorganization.

Antitrust / Competition
Emiko Maki　　Serina Matsuda

Banking and Finance Law
Masahiro Otsuki

Corporate and Mergers and Acquisitions Law
Yasuhiko Ikubo　　Masaru Uetake　　Hirofumi Kato　　Toshiyasu Suzaki

Insolvency & Reorganization
Eiji Katayama　　Hisashi Ito  (Best Lawyer of the Year)　　Isao Saiki　　Junichi Kitahara

Hideto Sasaki　　Hirofumi Kato

Intellectual Property Law
Eiji Katayama　　Junichi Kitahara　　Hirokazu Honda　　Makoto Hattori　　Mami Hino
Naho Ebata　　Kaoru Kuroda　　Tsukasa Iguchi

Life Sciences Practice
Mami Hino

Litigation
Yasuhiko Ikubo　　Eiji Katayama　　Isao Saiki　　Junichi Kitahara　　Mami Hino

Tomohiro Yoneyama

Patent Law
Sumiko Kobayashi　　Norio Ohmori　　Shimako Kato　　Megumu Kurokawa

Nobushige Furuhashi　　Yasuhito Suzuki　　Takashi Fujita　　Tomohisa Sugiyama

Kyoko Tamura　　Rikita Karakawa

Real Estate Law
Kazuyuki Taguchi

We received “Law Firm of the Year” in The Best Lawyers® in Japan 2024
In The Best Lawyers® in Japan 2024 edition, we received “Law Firm of the Year” in the category of Intellectual Property Law.

We were highly evaluated in Chambers Global 2023

In Chambers Global 2023（Chambers & Partners）, our firm was ranked Band 1 in Intellectual Property: Domestic in Japan, and the following lawyers and patent attorneys were highly evaluated.

Please check the website of Chambers & Partners  for more details.

Intellectual Property: Domestic: Band 1
Ranked lawyers: Eiji Katayama, Junichi Kitahara and Makoto Hattori

We were highly evaluated in The Legal 500 (2023)
In The Legal 500 Asia Pacific (2023), our firm was chosen as a top tier firm in the following categories, and the following attorneys and patent attorney were selected as “Leading Individuals”.

Intellectual Property: Independent Local Firms: Tier 1

Leading Individuals: Bengoshi: Makoto Hattori

Leading Individuals: Benrishi: Mami Hino

Restructuring And Insolvency: Independent Local Firms: Tier 2

Leading Individuals: Bengoshi: Eiji Katayama

We were highly evaluated in The Nikkei’s “Corporate Legal Tax Affairs and Lawyers Survey 2022”
We were highly evaluated in The Nikkei’s “Corporate Legal Tax Affairs and Lawyers Survey 2022” and the following attorneys were chosen as the Best Performing Lawyers of 2022.

Reliable Law Firm Ranking

Abe, Ikubo & Katayama (11th)

Intellectual Property Law Overall Ranking

Eiji Katayama (8th)

Best Performing Lawyers (chosen by companies) Ranking

Makoto Hattori (12th, intellectual property)

Junichi Kitahara and Hiroshi Kobayashi named to IAM Global Leaders 2023
Junichi Kitahara and Hiroshi Kobayashi have been ranked in the IAM Global Leaders 2023.

Members of our firm were recognized in “Expert Guides Women in Business Law”
Following attorney and patent attorneys of our firm were  recognized as top female legal practitioners in “Expert Guides Women in Business Law” (Euromoney PLC).

Life Sciences: Mami Hino

Patents: Mami Hino, Naho Ebata, Shimako Kato, Kaoru Kuroda, Akie Ohno

Trademarks / Copyright: Naho Ebata

We were highly evaluated in Asialaw 2023
In Asialaw 2023, our firm was highly ranked in the following categories, and the following attorneys and patent attorneys were selected as leading lawyers.

Intellectual property…Outstanding
Pharmaceuticals and life sciences…Recommended
Dispute resolution…Highly recommended
Restructuring and insolvency…Highly recommended

Ranked lawyers: Eiji Katayama, Junichi Kitahara, Makoto Hattori and Mami Hino

Eiji Katayama was selected as Who’s Who Legal: Thought Leaders – Global Elite 2023
In Who’s Who Legal: Thought Leaders – Global Elite 2023,  Eiji Katayama was selected as a Thought Leader in IP-Patent chapter.

Eiji Katayama was selected as The A-List: Japan’s Top 100 Lawyers 2022
Based on the research conducted by Asia Business Law Journal (Vantage Asia Publishing Limited), Eiji Katayama was selected as The A-List: Japan’s Top 100 Lawyers 2022.

We were highly evaluated in Who’s Who Legal: Japan 2022
In Who’s Who Legal: Japan 2022 (Law Business Research Ltd),  following attorneys and patent attorneys were selected as Leading Professionals in following categories.

Eiji Katayama
・Intellectual Property
・Life Sciences
・Restructuring & Insolvency

Mami Hino
・Intellectual Property
・Life Sciences

We were highly evaluated in IAM Patent 1000 (2022)

In IAM Patent 1000 (2022) organized by Law Business Research, our firm ranked in the following categories, and our attorneys and patent attorneys were highly evaluated.

Domestic: Litigation: Gold
Domestic Prosecution: Silver
Domestic Transaction: Highly-recommended

Ranked lawyers:
Eiji Katayama　Junichi Kitahara (Gold)　Hiroshi Kobayashi (Gold)
Makoto Hattori (Silver)　Mami Hino (Silver)　Shimako Kato (Bronze)

We were highly evaluated in Benchmark Litigation 2022
Based on research conducted by Benchmark Litigation Asia-Pacific & China 2022 (Euromoney Institutional Investor PLC), our firm was highly evaluated in the following category, and the following attorneys and patent attorney were selected as Litigation Star.

Intellectual Property 　Tier1
Ranked lawyers: Eiji Katayama, Junichi Kitahara, Makoto Hattori and Mami Hino

We were highly evaluated in IP STARS 2022

In IP STARS 2022, published by Managing Intellectual Property (Euromoney Institutional Investor PLC), our lawyers and patent attorneys were highly evaluated in the follwing areas.

Patent star：Eiji Katayama　Hiroshi Kobayashi　Mami Hino　Naho Ebata　Shimako Kato
Trade mark star：Naho Ebata
Top 250 Women in IP：Mami Hino

Mami Hino was selected as Top 100 Women in Litigation – Asia Pacific 2022
Based on research conducted by Benchmark Litigation (Euromoney Institutional Investor PLC), Mami Hino, a patent attorney and a registered foreign law lawyer of our firm, was selected as Top 100 Women in Litigation – Asia Pacific 2022 in intellectual property.

Mami Hino was selected as WIPR Leaders 2022 (Japan)
Mami Hino was selected as Japan’s WIPR Leaders 2022 in patent division and trademark division.

We received “Law Firm of the Year” in the category of Intellectual Property Law
In The Best Lawyers® in Japan 2023 edition, we received “Law Firm of the Year” in the category of Intellectual Property Law.

Lawyers from our firm were selected as The Best Lawyers: Ones to Watch in Japan 2023
Kentaro Sato was selected as The Best Lawyers: Ones to Watch in Japan 2023.

We were highly evaluated in The Best Lawyers® in Japan 2023 Edition
In The Best Lawyers® in Japan 2023 edition, the following lawyers and patent attorneys of our firm were recognized in each practice areas. In addition, Mami Hino received “Best Lawyer of the Year” in Life Sciences Practice.

Banking and Finance Law
Masahiro Otsuki

Corporate and Mergers and Acquisitions Law
Yasuhiko Ikubo　　Masaru Uetake　　Toshiyasu Suzaki

Life Sciences Practice
Mami Hino (Best Lawyer of the Year)

Litigation
Yasuhiko Ikubo　　Isao Saiki　　Junichi Kitahara　　Mami Hino

Insolvency & Reorganization
Shogo Abe　　Eiji Katayama　　Hisashi Ito　　Isao Saiki　　Junichi Kitahara

Intellectual Property Law
Eiji Katayama　　Junichi Kitahara　　Hirokazu Honda　　Makoto Hattori　　Mami Hino
Naho Ebata　　Kaoru Kuroda　　Tsukasa Iguchi

Real Estate Law
Kazuyuki Taguchi

In Chambers Global 2022（Chambers & Partners）, our firm was ranked Band 1 in Intellectual Property: Domestic in Japan, and the following lawyers and patent attorneys were highly evaluated.

Please check the website of Chambers & Partners  for more details.

Ranked lawyers: Eiji Katayama, Junichi Kitahara and Makoto Hattori

We were highly evaluated in The Legal 500 (2022)
In The Legal 500 (2022), our firm was ranked Tier 2 in Intellectual Property: Independent Local Firm.

We were highly evaluated in Chambers Asia-Pacific 2022
In Chambers Asia-Pacific 2022（Chambers & Partners）, our firm was highly evaluated in the following categories, and the following lawyers and patent attorneys were highly evaluated.
Please check the website of Chambers & Partners  for more details

Intellectual Property (domestic)  Band 1

Life Science Band 3

Restructure/Insolvency Band 3

Ranked lawyers: Eiji Katayama, Junichi Kitahara, Makoto Hattori and Mami Hino

Junichi Kitahara and Hiroshi Kobayashi were selected as IAM Global Leaders – 2022
Based on research conducted by IAM, Junichi Kitahara and Hiroshi Kobayashi were selected as IAM Global Leaders – 2022

We are one the highest ranking gender diversity law firm 2021
According to a survey conducted by Innovation Platform for Business Legal (IPBL), Abe, Ikubo & Katayama was ranked as No.2 in female lawyer proportion, which was 34.7% (as of January 2021 and among top fifty law firms in numbers of attorneys-at-law qualified in Japan).

We were highly evaluated in Asialaw Profiles 2022 and Asialaw Leading Lawyers 2022
In Asialaw Profiles 2022, we were highly ranked in the following areas, and the following lawyers and patent attorneys were selected as Asialaw Leading Lawyers 2022.

Intellectual Property (Outstanding)
Dispute resolution (Highly recommended)
Restructuring and insolvency (Highly recommended)
Pharmaceuticals and life sciences (Recommended)

Ranked lawyers: Eiji Katayama, Junichi Kitahara, Makoto Hattori and Mami Hino

Mami Hino was selected as Top Patent Female Practitioner in Japan
Mami Hino, a patent attorney and a registered foreign law lawyer of our firm, was selected as Japan’s Top Patent Female Practitioner in 11th Annual Edition of the Women in Business Law Expert Guide (Euromoney Institutional Investor PLC).

We were highly evaluated in Who’s Who Legal: Japan 2021
In Who’s Who Legal: Japan 2021（Law Business Research Ltd）,  following lawyers and patent attorneys were selected as Leading Practitioners in following categories.

Eiji Katayama

【Global Leader】

・IP Patents－2021

・Life Sciences – Patent Litigation 2021

・Restructuring & Insolvency 2021

【National Leader】

・Japan – Intellectual Property 2021

・Japan – Life Sciences 2021

・Japan – Restructuring & Insolvency 2021

Sumiko Kobayashi

【National Leader】

・Japan – IP – Patent Attorneys (Benrishi) 2021

Mami Hino

【Global Leader】

・Life Sciences – Patent Litigation 2021

【National Leader】

・Japan – IP – Patent Attorneys (Benrishi) 2021

・Japan – Life Sciences 2021

Eiji Katayama, Hiroshi Kobayashi and Mami Hino were selected as Top 50 IP Experts of Japan 2021
Based on research conducted by Asia IP (Apex Asia Media Group) , Eiji Katayama, Hiroshi Kobayashi and Mami Hino were selected as Top 50 IP Experts of Japan 2021.

Mami Hino was selected as Top 100 Women in Litigation – Asia Pacific 2021
Based on research conducted by Benchmark Litigation (Euromoney Institutional Investor PLC), Mami Hino, a patent attorney and a registered foreign law lawyer of our firm, was selected as Top 100 Women in Litigation – Asia Pacific 2021 in intellectual property.

Mami Hino was selected as Top 250 Women in Intellectual Property 2021
Based on research conducted by Managing Intellectual Property （Euromoney Institutional Investor PLC）, Mami Hino, a patent attorney and a registered foreign law lawyer of our firm, was selected as Top 100 Women in Intellectual Property.

We were highly evaluated in IAM Patent 1000 (2021)

In IAM Patent 1000 (2021) organized by Law Business Research, we were highly ranked in the following areas, and our lawyers and patent attorneys were highly evaluated.

Domestic: Litigation: Tier 1
Domestic Prosecution: Tier 2
Domestic Transaction: Recommended
Ranked lawyers: Eiji Katayama　Junichi Kitahara　Hiroshi Kobayashi　Makoto Hattori　Mami Hino

We were highly evaluated in IP STARS 2021
In IP Stars（Euromoney Institutional Investor PLC）, we were highly ranked in the following areas, and our lawyers and patent attorneys were highly evaluated in these areas.

Patent Contentious (domestic firms)　Tier 1
Patent Prosecution (domestic firms)　Tier 2
IP STARS List 2021：Eiji Katayama　Hiroshi Kobayashi　Mami Hino　Naho Ebata

We were highly evaluated in ALB IP Ranking 2021
In ALB IP Ranking 2021 organized by Asian Legal Business (Thomson Reuters), we were ranked Tier 1 in Japan Domestic Patents and Tier 2 in Japan Domestic Copyright/Trademark.

We were highly evaluated in The Best Lawyers® in Japan 2022 Edition
In The Best Lawyers® in Japan 2022 edition, the following lawyers and patent attorneys of our firm were recognized in each practice areas.

Banking and Finance Law
Masahiro Otsuki

Corporate and Mergers and Acquisitions Law
Yasuhiko Ikubo　　Masaru Uetake　　Toshiyasu Suzaki

Insolvency & Reorganization
Shogo Abe　　Eiji Katayama　　Hisashi Ito　　Isao Saiki　　Junichi Kitahara

Intellectual Property Law
Eiji Katayama　　Junichi Kitahara　　Hirokazu Honda　　Makoto Hattori　　Mami Hino
Naho Ebata　　Kaoru Kuroda　　Tsukasa Iguchi

Life Sciences Practice
Mami Hino

Litigation
Yasuhiko Ikubo　　Isao Saiki　　Junichi Kitahara　　Mami Hino

Real Estate Law
Kazuyuki Taguchi

We were highly evaluated in Chambers Global 2021

In Chambers Global 2021（Chambers & Partners）, our firm was ranked Band 1 in Intellectual Property: Domestic in Japan, and the following lawyers and patent attorneys were highly evaluated.

Please check the website of Chambers & Partners  for more details.

Ranked lawyers: Eiji Katayama, Junichi Kitahara, Makoto Hattori and Mami Hino

We were highly evaluated in The Legal 500 (2021)
In The Legal 500 (2021), our firm was ranked Tier 2 in Intellectual Property: Independent Local Firm.

We were highly evaluated in Chambers Asia-Pacific 2021
In Chambers Asia-Pacific 2021（Chambers & Partners）, our firm was highly evaluated in the following categories, and the following lawyers and patent attorneys were highly evaluated.
Please check the website of Chambers & Partners  for more details

Intellectual Property (domestic)  Band 1

Life Science Band 3

Restructure/Insolvency Band 3

Ranked lawyers: Eiji Katayama, Junichi Kitahara, Makoto Hattori and Mami Hino

We are the most gender-diverse law firm 2020  
According to a survey conducted by Innovation Platform for Business Legal (IPBL), Abe, Ikubo & Katayama was ranked as No.1 in female lawyer ratio, which was 34.6% (as of January 2020 and among top fifty law firms in numbers of attorneys-at-law qualified in Japan).  We were awarded “IPBL AWARD L-STAR (Female Lawyers Part)” by IPBL.

We were highly evaluated in Best Lawyers® the 2020 Global Business Edition

In The 2020 Global Business Edition organized by Best Lawyers, the following lawyers and patent attorneys of our firm were highly evaluated in Banking and Finance Law, Corporate and Mergers and Acquisitions Law, Life Science, Litigation, Insolvency & Reorganization and Intellectual Property Law.

Listed lawyers: Yasuhiko Ikubo, Eiji Katayama, Hisashi Ito, Isao Saiki, Junichi Kitahara, Hirokazu Honda, Makoto Hattori, Masahiro Otsuki, Mami Hino, Naho Ebata, Toshiyasu Suzaki, Kaoru Kuroda and Tsukasa Iguchi

We were highly evaluated in Who’s Who Legal: Japan 2020

In Who’s Who Legal: Japan 2020（Law Business Research Ltd）, Eiji Katayama and Mami Hino were selected as Leading Practitioners in following categories.

Ranked Lawyers:

Eiji Katayama

【Thought Leader】

・Thought Leaders Global Elite 2020 – Patents

【Global Leader】

・Life Sciences – Patent Litigation 2020

・Patents 2020

【National Leader】

・Japan – Intellectual Property 2020

・Japan – Life Sciences 2020

・Japan – Restructuring & Insolvency 2020

Mami Hino

【Global Leader】

・Life Sciences – Patent Litigation 2020

【National Leader】

・Japan – IP – Patent Attorneys (Benrishi) 2020

・Japan – Life Sciences 2020

We received Japan Intellectual Property Firm of the Year Awards

In ALB Japan Law Awards 2020 organized by Asian Legal Business (Thomson Reuters), we received Japan Intellectual Property Firm of the Year Awards.

We were highly evaluated in Asialaw Profiles 2021 and Asialaw Leading Lawyers 2021

In Asialaw Profiles 2021, we were highly ranked in the following areas, and the following lawyers and patent attorneys were selected as Asialaw Leading Lawyers 2021.

Pharmaceuticals and life sciences (Recommended)

Dispute resolution (Highly recommended)

Intellectual Property (Outstanding)

Restructuring and insolvency (Highly recommended)

Ranked lawyers: Eiji Katayama, Junichi Kitahara, Makoto Hattori and Mami Hino

Mami Hino was selected as Influential Women in IP 2020

Based on research conducted by World Intellectual Property Review（Newton Media Ltd.）, Mami Hino, a patent attorney and a registered foreign law lawyer of our firm, was selected as Influential Women in IP 2020.

Eiji Katayama was selected as The A List: Japan’s Top 100 Lawyers

Based on the research conducted by Asia Business Law Journal（Vantage Asia Publishing Limited）, Eiji Katayama was selected as The A List: Japan’s Top 100 Lawyers 2020.

Mami Hino was selected as Top 100 Women in Litigation – Asia Pacific 2020
Based on research conducted by Benchmark Litigation (Euromoney Institutional Investor PLC), Mami Hino, a patent attorney and a registered foreign law lawyer of our firm, was selected as Top 100 Women in Litigation – Asia Pacific 2020 in intellectual property.

We were highly evaluated in ALB IP Ranking 2020

In ALB IP Ranking 2020 organized by Asian Legal Business (Thomson Reuters), we were ranked Tier 1 in Japan Domestic Patents and Tier 2 in Copyright/Trademark.

We were highly evaluated in IP STARS 2020

In IP Stars（Euromoney Institutional Investor PLC）, we were highly ranked in the following areas, and our lawyers and patent attorneys were highly evaluated in these areas.

Patent Contentious (domestic firms)　Tier 1

Patent Prosecution (domestic firms)　Tier 2

Trademark Contentious (domestic firms)　Tier 2

Trademark Prosecution (domestic firms) Other notable firms

IP STARS List 2020: Eiji Katayama, Naho Ebata, Mami Hino, Hiroshi Kobayashi and Takashi Fujita

We were highly evaluated in Benchmark Litigation Asia-Pacific 2020

In Benchmark Litigation Asia-Pacific 2020（Euromoney Institutional Investor PLC）, we were ranked Tier 1 in Intellectual Property.

We were highly evaluated in IAM Patent 1000 (2020)

In IAM Patent 1000 (2020) organized by Law Business Research, we were ranked Tier 1 in Domestic Litigation and IP Domestic prosecution, and the following lawyers and patent attorneys were highly evaluated.

Ranked lawyers: Eiji Katayama, Junichi Kitahara, Hiroshi Kobayashi, Makoto Hattori and Mami Hino

We were highly evaluated in Best Lawyers® in Japan 2021

In Best Lawyers® in Japan 2021, the following lawyers and patent attorneys of our firm were highly evaluated in Life Science, Litigation, Insolvency & Reorganization and Intellectual Property Law.

Listed lawyers: Yasuhiko Ikubo, Eiji Katayama, Hisashi Ito, Isao Saiki, Junichi Kitahara, Hirokazu Honda, Makoto Hattori, Mami Hino, Naho Ebata, Kaoru Kuroda and Tsukasa Iguchi

We were highly evaluated in Chambers Global 2020

In Chambers Global 2020（Chambers & Partners）, our firm was ranked Band 1 in Intellectual Property: Domestic in Japan, and the following lawyers and patent attorneys were highly evaluated.

Please check the website of Chambers & Partners  for more details.

Ranked lawyers: Eiji Katayama, Junichi Kitahara, Makoto Hattori and Mami Hino

We were highly evaluated in The Legal 500 (2020)

In The Legal 500 (2020), our firm was ranked Tier 2 in Intellectual Property Local Firm, and Eiji Katayama, a lawyer and a patent attorney of our firm, was highly evaluated.

We were highly evaluated in Chambers Asia-Pacific 2020

In Chambers Asia-Pacific 2020（Chambers & Partners）, our firm was highly evaluated in the following categories, and the following lawyers and patent attorneys were highly evaluated.

Intellectual Property (domestic)  Band 1

Life Science Band 3

Restructure/Insolvency Band 3

Ranked lawyers: Eiji Katayama, Junichi Kitahara, Makoto Hattori and Mami Hino

We were highly evaluated in IAM Patent 1000 (2019)

In IAM Patent 1000 (2019), we were ranked Tier 1 in Domestic Litigation and evaluated as Recommended in Domestic prosecution, and the following lawyers and patent attorneys were highly evaluated.

Ranked lawyers : Eiji Katayama, Junichi Kitahara, Hiroshi Kobayashi and Mami Hino

We were highly evaluated in Best Lawyers®
In Best Lawyers®, the following lawyers of our firm were highly evaluated.
Listed lawyers : Yasuhiko Ikubo, Eiji Katayama, Isao Saiki, Junichi Kitahara, Makoto Hattori and Mami Hino

We were highly evaluated in IP STARS 2019

In Managing Intellectual Property IP Stars 2019, we were highly ranked in the following areas and our lawyers and patent attorneys were highly evaluated in these areas.

Patent Contentious (domestic firms)　Tier 1

Patent Prosecution (domestic firms)　Tier 2

Trademark Contentious (domestic firms)　Tier 2

Lawyer and patent attorneys were recognized as IP STARS in 2019 : Eiji Katayama, Naho Ebata, Mami Hino and Hiroshi Kobayashi

We were highly evaluated in Managing IP Asia Award 2019

We received Managing IP Asia Award 2019 in Managing IP Asia Award 2019

We were highly evaluated in Chambers Global 2019

In Chambers Global 2019, our firm was ranked Band 1 in Intellectual Property: Domestic in Japan.

Ranked lawyers : Eiji Katayama, Junichi Kitahara, Makoto Hattori and Mami Hino

We were highly evaluated in the Legal 500 Asia Pacific 2019

In the Legal 500 Asia Pacific 2019, we were ranked second tier in Intellectual Property – Independent Local Firms.