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Patent Law
: Patently ObviousWho is Suing for Patent Infringement?
By Dennis Crouch
Kyle Jensen and his group at PriorSMart maintain an incredible database of patent litigation. Last week Kyle provided me with some interesting data on patent filings over the past decade for one of my ongoing projects. I thought that I would present a snapshot based on PriorSMart's information. The first table below looks at the number of patent infringement lawsuits filed by the top-25 patent lawsuit during the past ten years. The second table looks instead at the count of defendants who have been sued for that same time period. (At this point, the defendant-count has some duplication based on individual lawsuits that name both the parent and subsidiary companies as defendants).
Rank | Patent Plaintiff | Number of Cases Filed |
1 | Acacia | 190 |
2 | Laughlin Products | 162 |
3 | Pfizer | 149 |
4 | Monsanto Company | 125 |
5 | Ronald A Katz Technology Licensing | 107 |
6 | Patent Group (False Marking) | 106 |
7 | Novartis | 104 |
8 | Abbott Laboratories | 103 |
9 | Astrazeneca | 80 |
10 | Sanofi-Aventis | 78 |
11 | Oakley | 77 |
12 | Warner-Lambert Company | 74 |
13 | U.S. Philips | 74 |
14 | Mag Instrument | 70 |
15 | Merck | 69 |
16 | 3M Innovative Properties Company | 67 |
17 | Cygnus Telecommunications Technology | 64 |
18 | Schering | 64 |
19 | Millennium | 63 |
20 | Eli Lilly And Company | 61 |
21 | Promote Innovation (False Marking) | 60 |
22 | Melvino Technologies | 59 |
23 | Teva Pharmaceuticals | 58 |
24 | AstraZeneca AB | 54 |
25 | Eon-Net | 54 |
Rank | Patent Plaintiff | Number of Defendants | Non-Practicing Entity |
1 | Ronald A Katz Technology Licensing | 1295 | Yes |
2 | Acacia and Paul Ware | 1100 | Yes |
3 | Tillotson and Best Manufacturing Company | 468 | No |
4 | Laughlin Products | 463 | No |
5 | Geotag | 454 | Yes |
6 | U.S. Philips | 406 | No |
7 | Pfizer | 399 | No |
8 | Massachusetts Institute of Technology | 297 | Yes |
9 | Monsanto Company | 295 | No |
10 | Parallel Networks | 274 | Yes |
11 | Orion IP (Spangenberg) | 269 | Yes |
12 | Sanofi-Aventis | 260 | No |
13 | Electronics for Imaging (with MIT) | 253 | Yes |
14 | Abbott Laboratories | 230 | No |
15 | Melvino Technologies and ArrivalStar | 226 | Yes |
16 | Leon Stambler | 218 | Yes |
17 | Mag Instrument | 212 | No |
18 | Astrazeneca | 203 | No |
19 | PACid Group | 194 | Yes |
20 | Clear With Computers (Spangenberg) | 193 | Yes |
21 | Guardian Media Technologies | 193 | Yes |
22 | Warner-Lambert Company | 187 | No |
23 | Technology Patents | 186 | Yes |
24 | Honeywell International | 183 | No |
25 | Eli Lilly And Company | 182 | No |
About 11% of all defendants sued for patent infringement during this time-period were sued by these 25 plaintiffs.
Full post as published by Patently Obvious on March 14, 2011 (boomark / email).
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