Meisei International Patent Office
特許業務法人明成国際特許事務所
Public patent records for Meisei International Patent Office, 1978–2025: 6,329 patent families shared with other firms for 391 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
- 6,329
- 1978–2025. One family can be counted more than once.
- Activity 2016–2020
- 898
- Distinct families per year, summed over the last five complete years. 2021 onward is still being published.
- Clients (applicants)
- 391
- Applicants named on these families, all recorded years. Not a full client list.
- Firms shown below
- 6
Activity trend (2017–2026)
- Scope
- Meisei International Patent Office · 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 | 59 |
| 2018 | 105 |
| 2019 | 289 |
| 2020 | 334 |
| 2021 · preliminary | 146 |
| 2022 · preliminary | 163 |
| 2023 · preliminary | 72 |
| 2024 · preliminary | 37 |
| 2025 · preliminary | 1 |
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 |
|---|---|---|
| Coating metallic material; coating material with metallic material; surface treatment of metallic material by diffusion into the surface, by chemical conversion or substitution; coating by vacuum evaporation, by sputtering, by ion implantation or by chemical vapour deposition, in generalIPC/CPC C23C | 17.7% | 9.0× |
| Semiconductor devices not covered by class H10IPC/CPC H01L | 36.8% | 5.6× |
| Conjoint control of vehicle sub-units of different type or different function; control systems specially adapted for hybrid vehicles; road vehicle drive control systems for purposes not related to the control of a particular sub-unitIPC/CPC B60W | 5.5% | 4.6× |
| Generic packages, interconnections, connectors or other constructional details of devices covered by class H10IPC/CPC H10W | 5.9% | 3.1× |
| Information and communication technology [ICT] specially adapted for administrative, commercial, financial, managerial or supervisory purposes; systems or methods specially adapted for administrative, commercial, financial, managerial or supervisory purposes, not otherwise provided forIPC/CPC G06Q | 4.3% | 1.8× |
Yearly counts for 2018–2022, added up: 695 of 912 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.
- Abe Ikubo Katayama Law6,220 shared patent families
- Symphonia Intellectual Property Office清水 初志6,461 shared patent families
- RYUKA & PARTNERS龍華国際特許業務法人6,550 shared patent families
- 安村法律事務所6,612 shared patent families
- HARAKENZO WORLD PATENT & TRADEMARK特許業務法人HARAKENZO WORLD PATENT & TRADEMARK5,971 shared patent families
Compare Meisei International Patent Office side by side with
Explore the workspace profile
Open the app’s partner network, filing-year filters, and filing activity for Meisei International Patent Office. 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.