SHIGA Domestic & International Patent Office
ＳＨＩＧＡ内外国特許事務所
Public patent records for SHIGA Domestic & International Patent Office, 1978–2026: 2,556 patent families shared with other firms for 105 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
- 2,556
- 1978–2026. One family can be counted more than once.
- Activity 2016–2020
- 187
- Distinct families per year, summed over the last five complete years. 2021 onward is still being published.
- Clients (applicants)
- 105
- Applicants named on these families, all recorded years. Not a full client list.
- Firms shown below
- 5
Activity trend (2017–2026)
- Scope
- SHIGA Domestic & International Patent Office · Japan
- Filing years
- 2017–2026
- 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 | 16 |
| 2018 | 23 |
| 2019 | 40 |
| 2020 | 43 |
| 2021 · preliminary | 31 |
| 2022 · preliminary | 27 |
| 2023 · preliminary | 14 |
| 2024 · preliminary | 10 |
| 2026 · partial year | 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 |
|---|---|---|
| Controlling combustion enginesIPC/CPC F02D | 13.5% | 68.4× |
Yearly counts for 2018–2022, added up: 297 of 474 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.
- Kawaguchi International Patent Office川口 義雄2,539 shared patent families
- Ohno Law Offices大野総合法律事務所2,529 shared patent families
- Eikou Patent Office特許業務法人栄光特許事務所2,600 shared patent families
- Ashida & Kimura2,504 shared patent families
- Kita-Aoyama International Patent Attorneys弁理士法人北青山インターナショナル2,501 shared patent families
Compare SHIGA Domestic & International Patent Office side by side with
Explore the workspace profile
Open the app’s partner network, filing-year filters, and filing activity for SHIGA Domestic & 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.