Guest Post
by Christopher A. Cotropia, Professor of Law and Austin Owen
Research Fellow, University of Richmond School of Law; Jay P. Kesan, Professor and H. Ross & Helen
Workman Research Scholar, University of Illinois College of Law; and David L. Schwartz, Associate Professor and co-Director
of the Center for Empirical Studies of Intellectual Property at Chicago-Kent
College of Law
Today, a
certain type of patent litigant—the non-practicing entity (“NPE”), also known
as a patent assertion entity (“PAE”), patent monetization entity (“PME”), or
simply patent troll—is the target of much public debate, if not venom. Indeed, President
Obama himself got involved in this debate, with his Council of Economic
Advisers preparing a report this summer entitled “Patent
Assertion and U.S. Innovation.” The Executive Summary of the President’s report
sounds the following alarm about PAE suits:
Suits brought by PAEs have tripled in
just the last two years, rising from 29 percent of all infringement suits to 62
percent of all infringement suits.
This asserted
explosion in PAE-initiated litigation has fed into a wider perception that PAEs
are out of control and need reining in by Congress. But is the factual assertion by the
President’s report an accurate characterization of total PAE litigation activity?
We address
this important issue in our new article, Patent Assertion Entities (PAEs) Under the Microscope: An Empirical
Investigation of Patent Holders as Litigants. To investigate PAE litigation, we
personally hand-coded all 7,500+ patent holder litigants in 2010 and 2012. In
our coding, we finely classified the nature of the litigants, going beyond the
simple PAE / non-PAE label. Specifically, we coded each patent holder as
one of the following: (1) a University;
(2) an Individual Inventor/Family Trust; (3) a large Patent Aggregator (e.g.,
Acacia); (4) a Failed Operating Company or Failed Start-up; (5) a Patent
Holding Company that appears unaffiliated with the original inventor or owner; (6)
an Operating Company; (7) an IP Holding Company affiliated with an operating
company; or (8) a Technology Development Company (e.g., Walker Digital).[1]
Based on our
data, and contrary to the assertions in the President’s report, we do not find an explosion in PAE litigation
between 2010 and 2012. In particular, the
President’s report considered only the raw
number of lawsuits filed in 2010 and 2012. By limiting its analysis to numbers of cases filed, rather than
the underlying parties involved, the President’s report was incomplete and led
to an erroneous conclusion.
To
understand the reason for this error in the President’s report, one must
consider an important change to patent litigation made by the America Invents
Act (AIA). The AIA, adopted in 2011, changed the joinder rules relating to
patent litigation by prohibiting patent holders from including multiple,
unrelated defendants in a single lawsuit based on commonly-asserted patent(s).
Instead, after the AIA, patent holders must file separate lawsuits against each
unrelated defendant. Thus, rather than focusing on the raw number of lawsuits
as the President’s report did, a more appropriate inquiry should focus on the total number of patent litigants, both patent holders and accused
infringers, in order to gauge more
accurately the actual number of patent disputes between parties. Using this
approach, we found almost no difference between 2010 and 2012 in the number of
litigants in patent cases. In other words, the “explosion” of PAE litigation
between 2010 and 2012 is simply a mirage.
First, in
terms of
raw number of patent
lawsuits, our study reveals that the number of lawsuits did increase between
2010 and 2012, with a substantial increase in the
raw number filed by non-operating companies (by which we mean the
sum of all categories except operating companies). Our first finding therefore is similar to the
President’s report. For example, while
what we coded as “Patent Holding Companies” (“PHCs”) suits comprised 16% (400)
of cases filed in 2010, they comprised 38% (1,959) in 2012, and this is in
comparison to “Operating Companies” suits comprising 69% (1,750) of cases in
2010 to 45% (2362) of cases in 2012. The
bar chart below reports these findings along with those for all of the
categories we coded:
However,
when we evaluated the number of litigants, rather than just the number of cases,
the picture changed substantially. We considered separately both the number of
unique patentees alleging infringement in 2010 and 2012 and the total number of
alleged infringers in those years. For both, we found little difference between
2010 and 2012. Our second finding
therefore directly contradicts the statement in the President’s report that
there was an explosion of PAE lawsuits in that time period.
Specifically,
concerning the number of unique patentees starting litigation, the total number
barely changed between the studied years, increasing from 1,610 unique
patentees in 2010 to only 1,696 in 2012.
Further, the distribution among types of patentees stayed almost the
same, with the unique number of PHC patentees slightly increasing from 13%
(214) of all patentees in 2010 to 16% (266) in 2012, while Operating Company
patentees dropped slightly, from 72% (1,156) of all patentees in 2010 to 69% (1,165)
in 2012. The graph below reports all of the unique patentee numbers for the
various categories.
And the number of infringement
defendants (perhaps the best measure of the impact of patent litigation) corresponding
to each category of patent holder also did not vary much from 2010 to
2012. In particular, the overall
litigation exposure from Operating Company suits compared to other types of patentee
suits remained almost constant. The
number of defendants in Operating Company suits slightly dropped from 49% (5,708)
of the total number of defendants in 2010 to 48% (5,611) in 2012. And while the number of alleged infringers
for other categories changed, the changes were slight. For example, the number of defendants in PHCs
suits rose from 27% (3,179) of all defendants in 2010 to 32% (3,698) in 2012
while the number in Individual/Family Trust dropped from 11% (1,320) in 2010 to
8% (927) in 2012. The complete
comparison of total number of parties excluding the patentee in 2010 versus
2012 is set forth in the graph below.
From this
data, the only real change between 2010 and 2012, the increase in the raw
number of lawsuits, is most likely driven almost entirely by a procedural rule
change relating to joinder passed with the 2011 patent reform. These results
call certain findings in the President’s report into serious question.
Information
about lawsuit filings, obviously, cannot answer all questions about PAEs. There
are other serious questions relating to PAEs that demand an empirical answer.
For instance:
- What is the volume of patent demand
letters? How many of those assert frivolous claims?
- Of the litigated cases, how many of
the PAE (and non-PAE) cases are frivolous?
We do not
know the answers to these questions (yet), and further rigorous empirical
research is needed.
To aid the
effort in understanding the patent litigation landscape, we have decided to
release the underlying data—our specific classifications of the litigants in
all patent lawsuits filed in both 2010 and 2012—to the public. We believe that
releasing this data to the public, which unpacks the definition of PAE,
provides better illumination to policy makers, researchers, and others
interested in the patent litigation system.
This data is available to everyone to examine and evaluate at www.npedata.com.
The full
paper is available for download here. It provides a detailed analysis of
the distribution of the 2010 and 2012 patent cases, including information based
upon technology and litigant type.
We welcome any
comments and suggestions on the article or the dataset.
[1] A
more detailed description of the categories can be found on pages 13-14 of our
draft article.