According
to the recent research, titled ‘The AIA 500 Expanded: Effects of Patent
Monetization Entities’, patent trolls filed 56% of the patent lawsuits in 2012.
To understand the characteristics of patents exploited by patent trolls in liligations
filed in 2011 – 2012, we did further analysis of the subset of the researched
patents, which are related to telecommunications.
We
studied following characteristics of total of 159 patents: number of
litigations, assignments (in the USPTO), families, forward citations,
Independent claims, and priority date. We found that patents exploited by patent
trolls in litigations are generally characterized by high in numbers of
litigations, assignments, families, forward citations, Independent claims and
early in priority date: averages are 4, 4, 3, 47, 5, and 1997 for numbers of
litigations, assignments, families, forward citations, Independent claims, and
priority date respectively.
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