Koyo International Patent Office
弁理士法人光陽国際特許事務所
Public patent records for Koyo International Patent Office, 1978–2025: 1,310 patent families shared with other firms for 108 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
- 1,310
- 1978–2025. One family can be counted more than once.
- Activity 2016–2020
- 174
- Distinct families per year, summed over the last five complete years. 2021 onward is still being published.
- Clients (applicants)
- 108
- Applicants named on these families, all recorded years. Not a full client list.
- Firms shown below
- 5
Activity trend (2017–2026)
- Scope
- Koyo 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 | 5 |
| 2018 | 15 |
| 2019 | 39 |
| 2020 | 104 |
| 2021 · preliminary | 60 |
| 2022 · preliminary | 103 |
| 2023 · preliminary | 42 |
| 2024 · preliminary | 56 |
| 2025 · preliminary | 2 |
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 |
|---|---|---|
| Typewriters; selective printing mechanisms, i.e. mechanisms printing otherwise than from a forme; correction of typographical errorsIPC/CPC B41J | 16.5% | 22.3× |
| Diagnosis; surgery; identificationIPC/CPC A61B | 13.2% | 2.2× |
Yearly counts for 2018–2022, added up: 243 of 378 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.
- Kyoritsu Patent Office弁理士法人 共立特許事務所1,305 shared patent families
- HOKUTO PATENT ATTORNEYS OFFICE弁理士法人北斗特許事務所1,291 shared patent families
- Eimei International Patent Office弁理士法人英明国際特許事務所1,279 shared patent families
- Ginza Marronnier Patent Office弁理士法人銀座マロニエ特許事務所1,348 shared patent families
- Furuya Patent Office1,265 shared patent families
Compare Koyo International Patent Office side by side with
Explore the workspace profile
Open the app’s partner network, filing-year filters, and filing activity for Koyo 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.