【Client Alert】The Basic Regulatory Framework for Medical Device Businesses in Japan
The Basic Regulatory Framework for Medical Device Businesses in Japan
This page provides an English executive summary of the Japanese article “医療機器ビジネスにおける許認可の基本構造”. The full article is available in Japanese.
Executive Summary/ Key Takeaways
- What is the classification system for medical devices under the PMD Act?
Medical devices are classified into four categories based on their level of risk to the human body, ranging from Class I (low risk) to Class IV (high risk). This classification forms the basis for determining the required business licenses and regulatory procedures applicable to each product. -
What licenses are required to conduct a medical device business in Japan?
Medical device businesses typically require several types of regulatory licenses, including (i) a Marketing Authorization Holder (MAH) license at the entity level, (ii) manufacturing registration for each manufacturing site, (iii) sales and leasing licenses at the business office level, and (iv) repair business licenses. The required licenses depend on the nature of the business and the class of devices involved. -
What are the product-level regulatory requirements for medical devices (notification, certification, and approval)?
Depending on the device classification, medical devices are subject to one of three regulatory procedures: notification to the Pharmaceuticals and Medical Devices Agency (PMDA), certification by a registered certification body, or approval by the Minister of Health, Labour and Welfare. In general, devices with higher risk levels are subject to more rigorous regulatory review. -
What are “Specified Maintenance Control Medical Devices” and how do they differ from ordinary classification rules?
Specified Maintenance Control Medical Devices are devices designated as requiring specialized maintenance, inspection, or repair due to the potential impact on diagnosis or treatment if not properly managed. Even devices classified as Class I or Class II may require sales or leasing licenses if they fall into this category. -
What regulatory issues should be examined in medical device M&A transactions or market entry?
Companies should confirm at early stage the category of the target products, including their classification of the relevant medical devices and whether they qualify as Specified Maintenance Control Medical Devices, and then identify the necessary business licenses and product-level regulatory procedures. Early regulatory assessment is important to properly identify compliance obligations and transaction risks.
This English page is provided for informational purposes only. The Japanese version constitutes the authoritative text.
(Written by: Takuya Mima)

Takuya Mima, Attorney at Law
takuya.mima@tkilaw.com
Practice Areas: Life Sciences & Healthcare, Intellectual Property, M&A, Cross-border Transactions
Takuya Mima has more than a decade of experience at leading Japanese law firms, advising on a broad range of corporate matters, including mergers and acquisitions, strategic alliances, business reorganizations, and cross-border transactions.
He focuses particularly on the life sciences and healthcare sectors, where he regularly advises on intellectual property–related transactions such as licensing agreements, joint research and development arrangements, and brand and design protection. He also has substantial experience in intellectual property disputes, including patent litigation in the United States.
Takuya has further strengthened his practical insight through secondments to the legal department of a multinational pharmaceutical company and to the intellectual property division of a major manufacturing company. These experiences enable him to provide practical, business-oriented advice that bridges legal, regulatory, and intellectual property considerations.
He has also authored numerous publications on intellectual property and healthcare law.