Who is Suing for Patent Infringement? Number of defendants ?

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sman998

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Who is Suing for Patent Infringement? Number of defendants ?

in response to

Just hoiw importent is it to be right.

tteddy1

posted on Mar 22, 2011 01:04PM

Hopefully after positive Markman ruling our number of infringers (Defendants )

goes much higher than current 150 .

Mar 14, 2011

Who is Suing for Patent Infringement?

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 top-25 filers of patent infringement lawsuits 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.