The following table shows the ranking of United States IP law firm. The ranking is based on the following conditions.
- Technical field: Sound (digital audio processing, tuning device, speech processing, voice search, noise cancellation, microphone, piano, electronic instrument, etc.)
- Status: United States granted patents in 2018 (registration date).
- Count: The number of patents represented by each United States IP law firm, attorney or agent was counted. Even if attorney or agent belongs to a law firm, they were counted separately.
| Ranking | No. | IP law firm |
|---|---|---|
| 1 | 106 | Fish & Richardson |
| 2 | 75 | Perkins Coie |
| 3 | 70 | Sughrue Mion |
| 4 | 50 | Michael A Glenn |
| 5 | 49 | Knobbe Martens Olson & Bear |
| 6 | 49 | Oblon McClelland Maier & Neustadt |
| 7 | 48 | Pierce Atwood |
| 8 | 42 | Lee & Hayes |
| 9 | 36 | Wolf Greenfield & Sacks |
| 10 | 36 | Harness Dickey & Pierce |
| 11 | 36 | Toler Law Group |
| 12 | 35 | Schwegman Lundberg & Woessner |
| 13 | 35 | Dentons US |
| 14 | 34 | Greenblum & Bernstein |
| 15 | 33 | Haynes & Boone |
| 16 | 31 | Kilpatrick Townsend & Stockton |
| 17 | 29 | Birch Stewart Kolasch & Birch |
| 18 | 26 | Cantor Colburn |
| 19 | 25 | Foley & Lardner |
| 20 | 25 | Shumaker & Sieffert |
| 21 | 25 | Brooks Kushman |
| 22 | 22 | Brinks Gilson & Lione |
| 23 | 22 | McDermott Will & Emery |
| 24 | 21 | Tutunjian & Bitetto |
| 25 | 21 | Womble Bond Dickinson (US) |
| 26 | 21 | Fitch Even Tabin & Flannery |
| 27 | 21 | Rossi Kimms & McDowell |
| 28 | 21 | Chip Law Group |
| 29 | 20 | Morgan Lewis & Bockius |
| 30 | 20 | Alston & Bird |
In the patent search, it was confirmed that a high-accuracy population (i.e., a population not including non-relevant fields) of patents was obtained. Subsequently, the population was used to create the table.
By entering the Firm name in the "Attorney or Agent" column of USPTO database, you can find the patent information handled by each Firm.
