Liu Shen & Associates
北京市柳沈律师事务所
Public patent records for Liu Shen & Associates, 1978–2025: 5,373 patent families shared with other firms for 232 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
- 5,373
- 1978–2025. One family can be counted more than once.
- Activity 2016–2020
- 2,022
- Distinct families per year, summed over the last five complete years. 2021 onward is still being published.
- Clients (applicants)
- 232
- Applicants named on these families, all recorded years. Not a full client list.
- Firms shown below
- 5
Activity trend (2017–2026)
- Scope
- Liu Shen & Associates · China
- 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 | 262 |
| 2018 | 332 |
| 2019 | 493 |
| 2020 | 720 |
| 2021 · preliminary | 550 |
| 2022 · preliminary | 525 |
| 2023 · preliminary | 351 |
| 2024 · preliminary | 236 |
| 2025 · preliminary | 19 |
Technology fields it focuses on
Fields where this firm's share of patent families is well above the average for China firms, 2018–2022.
| Field | Share of its families | vs China average |
|---|---|---|
| TransmissionIPC/CPC H04B | 6.5% | 2.3× |
| Wireless communication networksIPC/CPC H04W | 18.5% | 2.2× |
| Transmission of digital information, e.g. telegraphic communicationIPC/CPC H04L | 14.2% | 1.9× |
| Radio direction-finding; radio navigation; determining distance or velocity by use of radio waves; locating or presence-detecting by use of the reflection or reradiation of radio waves; analogous arrangements using other wavesIPC/CPC G01S | 3.3% | 1.8× |
| Conjoint control of vehicle sub-units of different type or different function; control systems specially adapted for hybrid vehicles; road vehicle drive control systems for purposes not related to the control of a particular sub-unitIPC/CPC B60W | 2.2% | 1.7× |
Yearly counts for 2018–2022, added up: 20,127 of 31,610 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 China firms
Yearly counts since 1990, added up. One family can be counted more than once.
- CCPIT Patent and Trademark Law Office中国贸促会专利商标事务所5,908 shared patent families
- NTD Patent & Trademark Agency Ltd.4,791 shared patent families
- China Science Patent & Trademark Agent Ltd.中科专利商标代理有限责任公司4,494 shared patent families
- China Patent Agent (H.K.) Ltd.6,454 shared patent families
- Shanghai Patent & Trademark Law Office, LLC.上海专利商标事务所有限公司4,170 shared patent families
Compare Liu Shen & Associates side by side with
Explore the workspace profile
Open the app’s partner network, filing-year filters, and filing activity for Liu Shen & Associates. 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.