Best Patent Lawyers in Japan

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MASUDA & PARTNERS LAW OFFICE
Chiyoda-ku, Japan

Founded in 2008
50 people in their team
Japanese
English
Masuda & Partners Law Office was established in February 2008, led by founding attorney Eiji Masuda. Since that start, our firm has been involved in numerous domestic and international matters, mainly in the areas of corporate legal affairs, business-to-business disputes, and intellectual...
The Harris Firm
Tokyo, Japan

Founded in 2003
English
The Harris Firm is a distinguished intellectual property boutique law firm with offices in Tokyo and Washington, DC. The firm's capabilities, efficiency, and state-of-the-art technical resources enable it to offer comprehensive intellectual property legal services to individuals and organizations...
World IP Law
Tokyo, Japan

75 people in their team
English
World IP Law specializes in end to end intellectual property protection in Japan and worldwide. The firm drafts patent applications in Japanese or English, files in Japan, and coordinates entry into international patent regimes to secure global protection. It also translates patent documents...

Founded in 1963
English
Yanagida & Partners, also known as Yanagida Kokusai Law Offices, is a Tokyo and Yokohama based firm with a long heritage dating to 1963. The firm concentrates on sophisticated cross-border and domestic corporate matters, providing clients with strategic guidance on mergers and acquisitions,...
Yohira Law Office
Tokyo, Japan

Founded in 2023
2 people in their team
English
Hydrangea Law Office, known in Japan as よひら法律事務所, focuses on cross border and international legal matters and provides tailored advisory for Japanese companies, foreign enterprises and individuals working across markets. The firm began operations in 2023 with two attorneys and has...
Yokohama Partner Law Office
Yokohama, Japan

Founded in 2000
50 people in their team
Japanese
English
When I was little, I loved "The Crying Red Demon." This is a fairy tale by Hirosuke Hamada. Red Demon wants to get along with humans, but everyone is afraid of him. So, I put up a sign in front of my house to try to get people to come visit me.I am a kind-hearted demon.Anyone is welcome to come.We...
SHUSAKU YAMAMOTO
Osaka, Japan

Founded in 2000
50 people in their team
Japanese
English
What it means to serve our clientsBecause of the breadth, depth and diversity of technological and legal experience of the SHUSAKU·YAMAMOTO team, we have extensive expertise in serving and protecting anything under the sun that is made by man.Check out the far-ranging Nikkei Leadership Interview...
MORGAN LEWIS & BOCKIUS LLP
Chiyoda-ku, Japan

Founded in 1873
5,000 people in their team
Japanese
English
OUR FIRMAt Morgan Lewis, we work in collaboration around the world-always ready to respond to the needs of our clients and craft powerful solutions for them.From our offices in strategic hubs of commerce, law, and government across North America, Asia, Europe, and the Middle East, we work with...

English
Otsuka Kinashi Kokusai Sogo Law Office is a boutique international law firm based in Fukuoka, Japan, that specializes in domestic and cross border legal matters. The firm serves Japanese and international clients, leveraging a network of lawyers across Asia including China, Taiwan, Hong Kong,...

7 people in their team
English
HIFUMI Law is a Tokyo based law firm that provides expertise across regulatory affairs, corporate crisis management, and dispute resolution. The firm counsels financial institutions and fintech entities on compliance with financial regulations, governance, and risk management while advising on debt...
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About Patent Law in Japan

Patent law in Japan is governed by the Patent Act, which regulates the granting and enforcement of patents in the country. A patent provides the holder with the exclusive right to exploit an invention, preventing others from making, using, or selling the invention without permission. This legal framework aims to encourage innovation by ensuring inventors can benefit economically from their creations. Japan is one of the leading countries in terms of patent filings, reflecting its strong emphasis on technological advancement and innovation.

Why You May Need a Lawyer

Engaging a lawyer specializing in patent law can be beneficial for numerous reasons. Inventors may require legal help to navigate the complex patent application process, which involves meeting specific criteria and deadlines. Businesses might need a lawyer to conduct patent infringement analyses to avoid legal disputes or to enforce their patent rights against infringing parties. Additionally, when entering into licensing agreements, having a lawyer ensures that the terms are favorable and legally sound. Patent attorneys in Japan can also provide strategic advice on managing intellectual property portfolios effectively.

Local Laws Overview

Key aspects of Japanese patent law include the requirement for an invention to be new, inventive, and industrially applicable to be patentable. The Japan Patent Office (JPO) is responsible for examining patent applications and granting patents. Japan operates on a first-to-file basis, meaning that the first person to file a patent application has the rights to the patent. The standard patent protection duration is 20 years from the filing date, with annual maintenance fees required to keep the patent in force. The law also provides specific procedures for addressing patent infringement, including litigation and dispute resolution options.

Frequently Asked Questions

What qualifies as a patentable invention in Japan?

A patentable invention in Japan must be novel, involve an inventive step, and be capable of industrial application. It must not fall under any non-patentable categories stipulated by the Patent Act.

How long does the patent application process take in Japan?

The patent application process can typically take about 18 months to several years, depending on the complexity of the application and the workload of the Japan Patent Office (JPO).

Are there any fees involved in obtaining a patent in Japan?

Yes, the patent process in Japan involves filing fees, examination fees, and annual maintenance fees to keep the patent in force once granted.

Can I apply for a patent in Japan if I am a foreign national?

Yes, foreign nationals or companies can apply for patents in Japan. However, administrative and application procedures must be conducted through a representative domiciled in Japan, such as a patent attorney.

What is the duration of patent protection in Japan?

Patent protection in Japan lasts for 20 years from the filing date, subject to the payment of annual maintenance fees.

What should I do if I believe my patent is being infringed?

If you suspect patent infringement, consulting a patent lawyer to evaluate the situation and consider the options for enforcement through negotiations, settlements, or litigation is advisable.

Is it possible to challenge a patent in Japan?

Yes, third parties can challenge a granted patent by filing an opposition or invalidation trial with the Japan Patent Office if they believe the patent does not meet the legal requirements for patentability.

Can software be patented in Japan?

Yes, software can be patented in Japan if it meets the criteria for patentability, such as having technical characteristics like control or processing of information in a novel and inventive way.

What is a PCT application, and how does it relate to Japan?

The Patent Cooperation Treaty (PCT) facilitates patent protection in multiple countries, including Japan. A PCT application can streamline the process of seeking patent protection in Japan through an international filing.

How can I search for existing patents in Japan?

The Japan Platform for Patent Information (J-PlatPat) allows users to search for existing patents. It provides access to patent applications and granted patents in Japan.

Additional Resources

For more information and resources on patent law in Japan, consider reaching out to the Japan Patent Office (JPO), the Japan Institute for Promoting Invention and Innovation, and relevant industry associations. Legal databases and professional networks like the Japan Patent Attorneys Association can also provide valuable insights and assistance.

Next Steps

If you need legal assistance with patents in Japan, the first step is to consult a qualified patent attorney with experience in Japanese patent law. Preparing documentation of your invention or any relevant materials can expedite the consultation process. Consider reaching out to a local law firm specializing in intellectual property or seeking recommendations from professional networks to find a lawyer suited to your specific needs. Lastly, stay informed about the latest amendments and regulations in Japanese patent law to ensure continuous compliance and protection of your intellectual properties.

Lawzana helps you find the best lawyers and law firms in Japan through a curated and pre-screened list of qualified legal professionals. Our platform offers rankings and detailed profiles of attorneys and law firms, allowing you to compare based on practice areas, including Patent, experience, and client feedback.

Each profile includes a description of the firm's areas of practice, client reviews, team members and partners, year of establishment, spoken languages, office locations, contact information, social media presence, and any published articles or resources. Most firms on our platform speak English and are experienced in both local and international legal matters.

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Disclaimer:

The information provided on this page is for general informational purposes only and does not constitute legal advice. While we strive to ensure the accuracy and relevance of the content, legal information may change over time, and interpretations of the law can vary. You should always consult with a qualified legal professional for advice specific to your situation.

We disclaim all liability for actions taken or not taken based on the content of this page. If you believe any information is incorrect or outdated, please contact us, and we will review and update it where appropriate.