Unicharm has a total of 27066 patents globally, out of which 16094 have been granted. Of these 27066 patents, 59% patents are active. Japan is where Unicharm has filed the maximum number of patents, followed by China and Europe. Parallelly, Japan seems to be the main focused R&D centre and also is the origin country of Unicharm.
Unicharm was founded in 1974. Unicharm is a leading manufacturer of personal hygiene products, including baby diapers, feminine hygiene, and adult incontinence products, with personal care contributing about 80% of its sales. Around 60% of its revenue comes from outside Japan, mainly from Asian markets such as China, Indonesia, and Thailand.
India is its fastest-growing market, and the company also has operations in Saudi Arabia, the Americas, and Europe. Its products are sold through retail stores and e-commerce platforms.
Recently, Unicharm acquired premium pet food manufacturer Nutrire, marking its entry into Brazil’s fast-growing pet care market and strengthening its presence across Central and South America.
Also in 2026, Unicharm announced its entry into India’s rapidly growing pet care market, expanding beyond personal hygiene to strengthen its presence in high-growth consumer segments.
Do read about some of the most popular patents of Unicharm which have been covered by us in this article and also you can find Unicharm patents information, the worldwide patent filing activity and its patent filing trend over the years, and many other stats over Unicharm patent portfolio.
How many patents does Unicharm have?
Unicharm has a total of 27066 patents globally. These patents belong to 8139 unique patent families. Out of 27066 patents, 16376 patents are active.
How Many Patents did Unicharm File Every Year?
Are you wondering why there is a drop in patent filing for the last two years? It is because a patent application can take up to 18 months to get published. Certainly, it doesn’t suggest a decrease in the patent filing.
| Year of Patents Filing or Grant | Unicharm Applications Filed | Unicharm Patents Granted |
| 2026 | 45 | 271 |
| 2025 | 373 | 492 |
| 2024 | 782 | 592 |
| 2023 | 808 | 751 |
| 2022 | 672 | 830 |
| 2021 | 841 | 814 |
| 2020 | 1028 | 872 |
| 2019 | 906 | 776 |
| 2018 | 1195 | 990 |
| 2017 | 1101 | 1165 |
How many Unicharm patents are Alive/Dead?
Worldwide Patents
How Many Patents did Unicharm File in Different Countries?
Countries in which Unicharm Filed Patents
| Country | Patents |
| Japan | 5249 |
| China | 3097 |
| Europe (EPO) | 1753 |
| Thailand | 1634 |
| United States Of America | 1573 |
| Taiwan | 1353 |
| South Korea | 1339 |
| Indonesia | 1224 |
| India | 1215 |
| Viet Nam | 858 |
| Malaysia | 814 |
| Australia | 647 |
| Brazil | 552 |
| Canada | 328 |
| Germany | 300 |
| Gulf Cooperation Council | 281 |
| Eurasia | 245 |
| Argentina | 225 |
| Singapore | 213 |
| Austria | 190 |
| Philippines | 118 |
| Spain | 105 |
| Russia | 86 |
| South Africa | 78 |
| Saudi Arabia | 76 |
| Ireland | 74 |
| Colombia | 71 |
| Morocco | 70 |
| Turkey | 64 |
| Ukraine | 62 |
| New Zealand | 30 |
| Mexico | 29 |
| Hong Kong (S.A.R.) | 18 |
| Poland | 15 |
| Hungary | 10 |
| Israel | 8 |
| Portugal | 7 |
| Czech Republic | 6 |
| Denmark | 6 |
| United Kingdom | 3 |
| Chile | 1 |
Where are Research Centers of Unicharm Patents Located?
10 Best Unicharm Patents
US7955549B2 is the most popular patent in the Unicharm portfolio. It has received 144 citations so far from companies like Du Pont, Johnson & Johnson, Kendall Company.
Below is the list of 10 most cited patents of Unicharm:
| Publication Number | Citation Count |
| US7955549B2 | 144 |
| US7954213B2 | 140 |
| US7722590B2 | 131 |
| US20110319851A1 | 117 |
| US20120196091A1 | 116 |
| US7662462B2 | 114 |
| US7708725B2 | 112 |
| US7132585B2 | 111 |
| US7625363B2 | 110 |
| US7220250B2 | 110 |
What Percentage of Unicharm US Patent Applications were Granted?
Unicharm (Excluding its subsidiaries) has filed 2080 patent applications at USPTO so far (Excluding Design and PCT applications). Out of these 1517 have been granted leading to a grant rate of 74.58%.
Below are the key stats of Unicharm patent prosecution at the USPTO.
Which Law Firms are managing US Patents for Unicharm?
| Law Firm | Total Applications | Success Rate |
| Hauptman Ham Llp | 1085 | 88.79% |
| Crowell Chicago | 324 | 66.36% |
| Darby & Darby PC | 193 | 86.27% |
| Morrison & Foerster Llp | 81 | 74.07% |
| Osha Bergman Watanabe & Burton Llp | 79 | 60.42% |
| Michael S Gzybowski | 76 | 91.89% |
| Butzel Long PC | 58 | 80.70% |
| Fredrikson & Byron PA | 39 | 71.43% |
| Baker & Daniels | 18 | 100.00% |
| Dla Piper Llp Us | 13 | 100.00% |
| Clark & Brody | 8 | 100.00% |
| Dentons Us Llp | 7 | 14.29% |
| Faegre Drinker Biddle & Reath Llp | 6 | 100.00% |
| Antonelli Terry Stout & Kraus Llp | 5 | 40.00% |
| Lowe Price Leblanc & Becker | 5 | 100.00% |
What are Unicharm key innovation segments?
What Technologies are Covered by Unicharm?
The chart below distributes patents filed by Unicharm