Lerner David Littenberg
Public patent records for Lerner David Littenberg, 1978–2025: 7,055 patent families shared with other firms for 1,705 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
- 7,055
- 1978–2025. One family can be counted more than once.
- Activity 2016–2020
- 2,021
- Distinct families per year, summed over the last five complete years. 2021 onward is still being published.
- Clients (applicants)
- 1,705
- Applicants named on these families, all recorded years. Not a full client list.
- Firms shown below
- 6
Activity trend (2017–2026)
- Scope
- Lerner David Littenberg · United States
- 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 | 377 |
| 2018 | 394 |
| 2019 | 475 |
| 2020 | 402 |
| 2021 · preliminary | 186 |
| 2022 · preliminary | 182 |
| 2023 · preliminary | 35 |
| 2024 · preliminary | 17 |
| 2025 · preliminary | 1 |
Technology fields it focuses on
Fields where this firm's share of patent families is well above the average for United States firms, 2018–2022.
| Field | Share of its families | vs United States average |
|---|---|---|
| Compounds containing metals not covered by subclasses C01D or C01FIPC/CPC C01G | 4.1% | 11.8× |
| Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energyIPC/CPC H01M | 40.0% | 11.8× |
| Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bondsIPC/CPC C08F | 5.1% | 5.0× |
| Measuring electric variables; measuring magnetic variablesIPC/CPC G01R | 6.1% | 4.5× |
| Propulsion of electrically-propelled vehicles; supplying electric power for auxiliary equipment of electrically-propelled vehicles; electrodynamic brake systems for vehicles in general; magnetic suspension or levitation for vehicles; monitoring operating variables of electrically-propelled vehicles; electric safety devices for electrically-propelled vehiclesIPC/CPC B60L | 4.0% | 3.6× |
Yearly counts for 2018–2022, added up: 1,635 of 2,750 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 United States firms
Yearly counts since 1990, added up. One family can be counted more than once.
- Dority Manning7,049 shared patent families
- Workman Nydegger6,996 shared patent families
- Baker & Hostetler6,959 shared patent families
- Seed IP Law Group6,911 shared patent families
- Alston Bird6,894 shared patent families
Compare Lerner David Littenberg side by side with
Explore the workspace profile
Open the app’s partner network, filing-year filters, and filing activity for Lerner David Littenberg. 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.