Abe Ikubo Katayama Law
Public patent records for Abe Ikubo Katayama Law, 1978–2025: 6,097 patent families shared with other firms for 735 clients (applicants). Sign in to explore the app’s partner network, selected filing periods, filing activity, and client relationships.
- Patent families shared with other firms
- 6,097
- 1978–2025. One family can be counted more than once.
- Activity 2016–2020
- 1,336
- Distinct families per year, summed over the last five complete years. 2021 onward is still being published.
- Clients (applicants)
- 735
- Applicants named on these families, all recorded years. Not a full client list.
- Firms shown below
- 3
Activity trend (2017–2026)
- Scope
- Abe Ikubo Katayama Law · Japan
- Filing years
- 2017–2025
- Unit
- Distinct families per year
2021–2026 are preliminary. Patent filings publish about 18 months after filing, and foreign filings can enter later, so these counts are still filling in.
Each family counts once within a year. A family may recur in multiple years.
View annual counts
| Year | Distinct families per year |
|---|---|
| 2017 | 174 |
| 2018 | 210 |
| 2019 | 373 |
| 2020 | 339 |
| 2021 · preliminary | 294 |
| 2022 · preliminary | 270 |
| 2023 · preliminary | 184 |
| 2024 · preliminary | 25 |
| 2025 · preliminary | 3 |
Technology fields it focuses on
Fields where this firm's share of patent families is well above the average for Japan firms, 2018–2022.
| Field | Share of its families | vs Japan average |
|---|---|---|
| PeptidesIPC/CPC C07K | 20.5% | 4.5× |
| Heterocyclic compoundsIPC/CPC C07D | 17.4% | 4.2× |
| Specific therapeutic activity of chemical compounds or medicinal preparationsIPC/CPC A61P | 41.7% | 4.2× |
| Preparations for medical, dental or toiletry purposesIPC/CPC A61K | 46.9% | 3.8× |
| Macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bondsIPC/CPC C08G | 10.0% | 3.4× |
Yearly counts for 2018–2022, added up: 2,220 of 2,473 families carry an IPC or CPC classification. Shares are of those classified families, and one family can fall in several fields.
Frequently associated firms
Firms that most often appear on the same patent families. One family can be counted more than once, so these are not unique totals.
Similar Japan firms
Yearly counts since 1990, added up. One family can be counted more than once.
- HARAKENZO WORLD PATENT & TRADEMARK特許業務法人HARAKENZO WORLD PATENT & TRADEMARK5,971 shared patent families
- Meisei International Patent Office特許業務法人明成国際特許事務所5,813 shared patent families
- Symphonia Intellectual Property Office清水 初志6,461 shared patent families
- Otsuka International Patent5,730 shared patent families
- RYUKA & PARTNERS龍華国際特許業務法人6,550 shared patent families
Compare Abe Ikubo Katayama Law side by side with
Explore the workspace profile
Open the app’s partner network, filing-year filters, and filing activity for Abe Ikubo Katayama Law. App counts follow the filing years and corridors you choose, so they can differ from this public profile.
Filing activity
Recorded patent families across the filing years you choose.
Full partner list
Every observed counterpart for the filing period you choose.
Named clients
Applicant relationships behind the exchange counts.