Atsumi & Sakai

Standing in Japan

In Japan, 10 of 31 verified firms are placed: 10 placed by recognitions the firm announced from at least two independent publishers, reconciled to one figure per publisher. Firms on file without either are listed in the directory below and are not ranked. No composite score is published for Japan. The full list for Japan

How Atsumi & Sakai is organised, read from the titles and practice areas it publishes for each lawyer. A head is named only where the firm states one; otherwise the partner admitted earliest on record stands first and is labelled so.

179 of Atsumi & Sakai’s profiles print the firm’s whole practice list rather than the person’s own, so they are left out of the groups above; only titles the firm states are shown.

37 lawyers list no practice area on the firm’s site; they appear in the list below.

Names, titles and practice areas as Atsumi & Sakai publishes them, senior titles first. Each name opens the firm’s own page for that person.

5 ranked individually by the directories, shown first

• Story · 10 November 2026 · 2 reports cited

  SyCipLaw's Ricardo Ongkiko joins WSG Asia Pacific Regional Council for 2026-2027

Where the directories place Atsumi & Sakai, practice area by practice area, as each table stands on the publisher’s own site. Each cell links to that table. The columns are the same on every page of this site.

What other publishers have said, as Atsumi & Sakai reports it on its own site, with the lawyers each announcement names. Each entry links to the page where it was read.

• Chambers2026

  当事務所、Accord Chambers、一般財団法人海外投融資情報財団共催、株式会社国際協力銀行後援で、「バングラデシュにおける事業成功に向けたリスク軽減―投資ストラクチャリング、法的リスクの低減及び紛争解決」を開催しました。 | 渥美坂井法律事務所・外国法共同事業

  Names , 趙 飛, 李 程, 森永 太郎, 徐 楊

• Lexology受賞2026

  Lexology Index: Japan 2026において、当事務所の弁護士が選出されました。 | 渥美坂井法律事務所・外国法共同事業

  Names 渥美 博夫, 趙 飛, 李 程, 徐 楊, 阿江 順也

• Asian Legal BusinessTier 12026

  当事務所が、Asian Legal Business (ALB)アジア版 2026年9月号のALB Asia M&A Rankings 2026において、国内系の法律事務所としてM&A分野でTier 1にランクインしました。 | 渥美坂井法律事務所・外国法共同事業

  Names 趙 飛, 李 程, 徐 楊

• Lexology受賞2026

  Lexology Index: IP 2026において、笠原智恵弁護士が選出されました。 | 渥美坂井法律事務所・外国法共同事業

  Names , 趙 飛, 李 程, 徐 楊, Chie Kasahara

• Managing IP受賞2026

  IP STARS 2026において、笠原智恵弁護士が選出されました。 | 渥美坂井法律事務所・外国法共同事業

  Names , 趙 飛, 李 程, 徐 楊, Chie Kasahara

• Asian Legal BusinessTier 22026

  Asian Legal Business (ALB) 2026年5月号の ALB IP Rankings 2026において、当事務所が国内系の法律事務所としてTier 2にランクインしました。 | 渥美坂井法律事務所・外国法共同事業

  Names 趙 飛, 李 程, 徐 楊

• The Legal 500Tier 32026

  Antitrust and competition: Independent local firms

  “The Legal 500 Asia Pacific 2026: Tier 3, Antitrust and competition: Independent local firms, Japan”

  The Legal 500’s published table

• The Legal 500Tier 22026

  Banking and finance: Independent local firms

  “The Legal 500 Asia Pacific 2026: Tier 2, Banking and finance: Independent local firms, Japan”

  The Legal 500’s published table

• The Legal 500Tier 32026

  Capital markets: Independent local firms

  “The Legal 500 Asia Pacific 2026: Tier 3, Capital markets: Independent local firms, Japan”

  The Legal 500’s published table

• The Legal 500Tier 22026

  Corporate and M&A: Independent local firms

  “The Legal 500 Asia Pacific 2026: Tier 2, Corporate and M&A: Independent local firms, Japan”

  The Legal 500’s published table

• The Legal 500Tier 42026

  Dispute resolution: Independent local firms

  “The Legal 500 Asia Pacific 2026: Tier 4, Dispute resolution: Independent local firms, Japan”

  The Legal 500’s published table

• The Legal 500Tier 32026

  Fintech - Independent local firms

  “The Legal 500 Asia Pacific 2026: Tier 3, Fintech - Independent local firms, Japan”

  The Legal 500’s published table

From the Firm

What Atsumi & Sakai has published on its own site lately: news, deals, recognitions and publications. Each links to the firm.

• 鈴木 由里 Yuri Suzuki

  publication · Oct 2026

• 当事務所や当事務所所属弁護士を騙るなりすまし事案等にご注意ください。 | 渥美坂井法律事務所・外国法共同事業

  event · Oct 2026

• 柴田啓介弁護士、高橋俊昭弁護士及び瀬川慶弁護士が共同執筆した記事「迅速仲裁とは？手続の流れ、期間・コストなどを解説」がBUSINESS LAWYERSのウェブサイトに掲載されました。 | 渥美坂井法律事務所・外国法共同事業

  publication · Oct 2026 · names 高橋 俊昭, 趙 飛, 瀬川 慶 and 3 more

• 「ドイツにおけるコンプライアンス法制の転換点―秩序違反法（OWiG）改正草案が日本企業に求めること―」：ドイツプラクティスチーム | 渥美坂井法律事務所・外国法共同事業

  publication · Oct 2026 · names and 5 more

• 【申込受付中】「A&S福岡法律事務所 海外進出セミナー2026（ベトナム・台湾）」 | 渥美坂井法律事務所・外国法共同事業

  event · Oct 2026 · names 趙 飛 and 4 more

• 木村勇人弁護士及び草野健太​​​​​​​弁護士が「国際プラスチック条約の最新動向と考えられる企業への影響」に登壇しました。 | 渥美坂井法律事務所・外国法共同事業

  event · Oct 2026 · names 趙 飛, 李 程 and 2 more

In the News

Coverage in which Atsumi & Sakai was named. Each headline links to the publisher.

• Japan’s Atsumi & Sakai launches Sapporo and Hokkaido desk

  Law.asia · 14 Oct 2026

• LPA Tokyo boosts corporate, M&A with new partner

  Law.asia · 20 May 2026

Sponsored: guides and chapters the firm wrote

Written by the firm. Practice guide chapters are placed with the publishers that carry them, usually for a fee. Listed for the reader’s use; never counted in the firm’s standing.

• Corporate & Commercial 2026: Japan (Trends and Developments)

  Sponsored · Chapter written for Chambers Global Practice Guides · Akimoto Kawamura, Christopher Hodgens

• Merger Control 2026: Japan (Trends and Developments)

  Sponsored · Chapter written for Chambers Global Practice Guides