Five minutes with … Tsuyoshi Sueyoshi, Yuasa and Hara

Managing IP is part of Legal Benchmarking Limited, 1-2 Paris Gardens, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

Five minutes with … Tsuyoshi Sueyoshi, Yuasa and Hara

Tsuyoshi Sueyoshi.JPG

Each week Managing IP speaks to a different IP lawyer about their life and career

Welcome to the latest instalment of Managing IP’s ‘Five minutes with’ series, where we learn more about IP lawyers on a personal as well as a professional level. This time we have Tsuyoshi Sueyoshi, partner at Yuasa and Hara in Tokyo.

Someone asks you at a party what you do for a living. What do you say?

Academic mercenary (person for hire) or part-time staff officer in contentious matters or negotiations.

Talk us through a typical working day.

Attending one or more meetings with a client(s), drafting briefs for lawsuits and/or invalidation actions, preparing advice and opinions to questions to clients, searching for evidence, studying precedents and academic literature.

What are you working on at the moment?

Drafting a complaint. The deadline is approaching.

Does one big piece of work usually take priority or are you juggling multiple things?

I juggle multiple tasks until 5:30 pm before focusing on one big piece after 5:30 pm. During business hours, it is difficult to focus on one heavy task, because of interruptions.

What is the most exciting aspect of your role and what is the most stressful?

Winning in disputes, the conclusion or closing of agreements, and completing draft papers are among the most exciting.

Approaching deadlines is the most stressful.

Tell us the key characteristics that make a successful IP lawyer.

Interest and understanding in science and technology. Putting forward logical arguments.

What is the most common misconception about IP?

IP rights are fragile and artificial. Some people believe that once a patent is granted it is solid. However, when an opposing party finds buried but competent prior art, a patent can be invalidated.

What or who inspires you?

Questions from clients.

If you weren't an IP lawyer, what would you be doing?

I'd be a researcher or a scientist.

Any advice you would give your younger self?

Tomorrow is another day.

more from across site and SHARED ros bottom lb

More from across our site

As UPC activity continues to drive strategic hiring and expansion, recent rulings have delivered a notable win for Samsung, and further uncertainty in the long-running GSK-Pfizer vaccine battle
The merger of Taylor Wessing’s UK operation with US firm Winston Strawn was a response to a strategic conundrum, its leaders say
Over the past 23 years, LawPlus has expanded from Thailand to Myanmar and built extensive international partnerships. What’s next?
Patrade has turned to experienced IP practitioner and business development leader Anders Isaksson to strengthen its commercial strategy and expand its reach to clients across Scandinavia
Cassie Hill, partner at Mishcon de Reya, discusses rebuilding client relationships after maternity leave and the pressures facing women at a pivotal stage of their career
Matthew Asbell discusses why empathy is important in law, being inspired by diverse workplaces and working on the latest, greatest large language model
The new partners add patent trial depth in high-value technology sectors including semiconductors, software, and cloud computing
From seller vetting and proprietary screening technology to brand collaboration and industry partnerships, Temu explains how its intellectual property enforcement programme combats infringement on its marketplace
A handful of US firms have quietly invested in European patent talent. Recent moves by Baker Botts and K&L Gates suggest that trend may be accelerating
Loke Khoon Tan and Stephanie Yip at Dentons explain what brand owners need to know ahead of January 1 2027, when updates to China’s Trade Mark Law come into force
Gift this article