Pro-Spec Patent Office
特許業務法人プロスペック特許事務所
Public patent records for Pro-Spec Patent Office, 1978–2020: 927 patent families shared with other firms for 61 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
- 927
- 1978–2020. One family can be counted more than once.
- Activity 2016–2020
- 55
- Distinct families per year, summed over the last five complete years. 2021 onward is still being published.
- Clients (applicants)
- 61
- Applicants named on these families, all recorded years. Not a full client list.
- Firms shown below
- 4
Activity trend (2017–2026)
- Scope
- Pro-Spec Patent Office · Japan
- Filing years
- 2017–2020
- Unit
- Distinct families per year
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 | 1 |
| 2019 | 5 |
| 2020 | 7 |
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.
- IBC Patent Attorney Corporation八田特許事務所929 shared patent families
- Senda International Patent Office特許業務法人センダ国際特許事務所932 shared patent families
- Miyazono Patent Office宮園特許事務所922 shared patent families
- Kouei Patent Office弁理士法人航栄事務所934 shared patent families
- Tsubame Patent Officeつばめ特許事務所920 shared patent families
Compare Pro-Spec Patent Office side by side with
Explore the workspace profile
Open the app’s partner network, filing-year filters, and filing activity for Pro-Spec 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.