Department profile
Anderson Mori & Tomotsune

Intellectual Property: Bengoshi

Asia-Pacific Guide 2026 : Japan

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Anderson Mori & Tomotsune

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About

Provided by Anderson Mori & Tomotsune

We have extensive, broad achievements and experience in intellectual property (IP). We provide professional, comprehensive advice and counsel tailored to each client’s circumstances and objectives across international and domestic disputes (litigation, arbitration, trials, etc.), various transactions, patent and trademark applications, and related matters. As corporate activities globalize— and companies must plan and implement IP strategies that leverage their strengths domestically and internationally — we support the preparation and execution of global IP strategies. We do so by utilizing our long-standing, close cooperative relationships with top firms in each country.

Chambers Review

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Intellectual Property: Bengoshi - Japan

What the Team is Known For
Anderson Mori & Tomotsune has a flourishing team with well-honed skills in an array of IP issues, especially in relation to patent infringement disputes and invalidation actions. The firm also advises on a range of transactional matters, licensing agreements and trade secrets disputes. The team's work includes mandates for both domestic and international companies, including on cross-border mandates. It assists clients from a wide range of industries, including the automotive, pharmaceutical and semiconductor sectors. The team includes qualified benrishi who assist clients with patent filing mandates.
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Strengths

Provided by Chambers

  • Anderson Mori & Tomotsune provided accurate advice on matters that spanned multiple areas of law across Japan, the USA, Europe and other countries. It was very helpful to receive one-stop advice.

    Intellectual Property: Bengoshi respondentAsia-Pacific

  • AMT distinguishes itself from competitors with attorneys who are uniquely knowledgeable in technology, not just the law, which gives it an edge in formulating strategy and understanding client goals.

    Intellectual Property: Bengoshi respondentAsia-Pacific

Notable Practitioners

Provided by Chambers

  • Yasufumi Shiroyama
    Yasufumi Shiroyama

    Yasufumi Shiroyama

    Yasufumi Shiroyama heads Anderson Mori & Tomotsune's intellectual property practice group and is well regarded for his expertise in IP litigation, acting for a range of leading international companies. He regularly handles patent infringement disputes in district and appellate courts in Japan.

    • He performed at the highest level with his quick understanding of our company, excellent judgment on personnel selection and timelines and easy-to-understand explanations to non-legal employees.

      Intellectual Property: Bengoshi respondentAsia-Pacific

    • Mr. Shiroyama brings careful consideration of the client's commercial goals and delivers insightful, practical advice in furtherance of the same.

      Intellectual Property: Bengoshi respondentAsia-Pacific
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  • Miki Goto
    Miki Goto

    Miki Goto

    Miki Goto continues to attract recognition, particularly for handling patent disputes. He draws on his background in science and engineering to guide electronic and technology companies through intellectual property matters at the local and multijurisdictional level.

    • He offers highly spirited service and listens intently to the contents of the consultation. He has a high level of comprehension, and is able to understand complex projects quickly.

      Intellectual Property: Bengoshi respondentAsia-Pacific

    • Miki Goto is very knowledgeable in his area and communicates well with international clients.

      Intellectual Property: Bengoshi respondentAsia-Pacific
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  • Yoshikazu Iwase
    Yoshikazu Iwase

    Yoshikazu Iwase

    Yoshikazu Iwase is an experienced patent disputes lawyer who represents domestic and international clients in venues including the Tokyo District Court.

    • He has a wealth of experience in patent litigation and gives very useful suggestions and advice on how to proceed. I leave the case to him with peace of mind.

      Intellectual Property: Bengoshi respondentAsia-Pacific

    • I am very satisfied with the timely and spot-on advice and support that I have received.

      Intellectual Property: Bengoshi respondentAsia-Pacific
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  • Masayuki Yamanouchi
    Masayuki Yamanouchi

    Masayuki Yamanouchi

    Masayuki Yamanouchi is an up-and-coming lawyer with a strong scientific background. Highly sought after by pharmaceutical clients, he often represents clients in patent disputes, including patent linkage, invalidation and enforcement.

    • Yamanouchi has a good reputation in the pharmaceutical IP area.

      Intellectual Property: Bengoshi respondentAsia-Pacific

    • He delivers practical advice, keeping in mind the client's position with competitors, suppliers and customers alike. He has command of both English and Japanese, as well as IP law in both countries.

      Intellectual Property: Bengoshi respondentAsia-Pacific
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Ranked Individuals at Anderson Mori & Tomotsune (4)

Japan

Members

Provided by Anderson Mori & Tomotsune

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