HOKUTO PATENT ATTORNEYS OFFICE
弁理士法人北斗特許事務所
Public patent records for HOKUTO PATENT ATTORNEYS OFFICE, 1978–2026: 1,356 patent families shared with other firms for 128 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
- 1,356
- 1978–2026. One family can be counted more than once.
- Activity 2016–2020
- 185
- Distinct families per year, summed over the last five complete years. 2021 onward is still being published.
- Clients (applicants)
- 128
- Applicants named on these families, all recorded years. Not a full client list.
- Firms shown below
- 6
Activity trend (2017–2026)
- Scope
- HOKUTO PATENT ATTORNEYS 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 | 13 |
| 2018 | 23 |
| 2019 | 64 |
| 2020 | 58 |
| 2021 · preliminary | 56 |
| 2022 · preliminary | 69 |
| 2023 · preliminary | 37 |
| 2024 · preliminary | 16 |
| 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 |
|---|---|---|
| Macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bondsIPC/CPC C08G | 12.0% | 4.1× |
Yearly counts for 2018–2022, added up: 291 of 455 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.
- Ai Patent Office弁理士法人あい特許事務所1,356 shared patent families
- Ariko Patent Office弁理士法人有古特許事務所1,357 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
- Koh-Ei, P.C.1,407 shared patent families
- Kyoritsu Patent Office弁理士法人 共立特許事務所1,305 shared patent families
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Explore the workspace profile
Open the app’s partner network, filing-year filters, and filing activity for HOKUTO PATENT ATTORNEYS 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.