Location: Shinagawa, Tokyo, Jpan
+81-3-5715-8651(rep.)

Who We Are

Who We Are

Masahiro Asamura

I became inaugurated as Asamura Patent Office Director from May 2019. I entered the Asamura Patent Office at that time in April 1999, and after being registered as a patent attorney in 2001,
Read more

Ken Kanai

The Asamura Patent Office responds quickly to customers’ needs for international intellectual property rights,
Read more

Kiyoshi Asamura

ith young leaders, we will strive to develop the traditional Asamura Patent Office with the new era.
Read more

We are top patent office in Japan

We have been experts in intellectual property since 1891. Today, we use our history, heritage and experience to help companies around the world get the results they want.

In the century we have been operating, advancements in technology have transformed the way we live, communicate and work. Over three generations we have adapted and continued to grow our expertise. Today, we are not only Japan’s longest-running patent office, we are a trusted IP partner to innovative companies from every corner of the globe.

We are different from other patent offices, and not just due to our incredible heritage:

Our experience

We have seen it all. We have worked with companies of all sizes in sectors from aviation to chemical engineering.

Over the years, we have built up an extensive network of relationships with IP law firms across every major jurisdiction. This means that we handle Japanese patent and trademark applications from clients anywhere in the world.

Our team

Every member of our team is important, and we all work together to make each case a success. We make sure we appoint the right person for the job.

Our business is made up of:

  • Over 100 members
  • 2 attorneys-at-law
  • 31 patent attorneys
  • Over 3,000 business-related offices abroad

Our insight

Our in-house R&D team gathers all the information we need about you, your industry and your technology so that we can provide the best insight. By identifying any potential problems early, we ensure that your application is as smooth as possible.

Our flexibility

We work in the way that will get the best results for our clients. This makes our service more responsive and valuable to our clients.

Our professionalism

We are prompt, clear and we provide detailed reports and valuable advice to our clients at all times.

Let’s talk about your business

Contact us today to see how we can help you protect your inventions and increase your competitive edge.