Sumitomo Patent Office
住友特許事務所
Public patent records for Sumitomo Patent Office, 1978–2024: 877 patent families shared with other firms for 52 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
- 877
- 1978–2024. One family can be counted more than once.
- Activity 2016–2020
- 169
- Distinct families per year, summed over the last five complete years. 2021 onward is still being published.
- Clients (applicants)
- 52
- Applicants named on these families, all recorded years. Not a full client list.
- Firms shown below
- 4
Activity trend (2017–2026)
- Scope
- Sumitomo Patent Office · Japan
- Filing years
- 2017–2024
- 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 | 6 |
| 2018 | 4 |
| 2019 | 32 |
| 2020 | 64 |
| 2021 · preliminary | 35 |
| 2022 · preliminary | 75 |
| 2023 · preliminary | 20 |
| 2024 · preliminary | 26 |
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.
- Akatsuki Union Patent Firm879 shared patent families
- Ebara Patent Office江原特許事務所884 shared patent families
- KYODO PATENT OFFICE弁理士法人協働特許事務所868 shared patent families
- Akimoto & Yoshizawa Patent Firm Osaka Office秋元・吉澤弁理士法人 大阪事務所866 shared patent families
- IPD International Patent Firmアイ・ピー・ディー国際特許業務法人861 shared patent families
Compare Sumitomo Patent Office side by side with
Explore the workspace profile
Open the app’s partner network, filing-year filters, and filing activity for Sumitomo 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.