LexisNexis Unveils Next Generation of Intellectual Property Research Technology With New Semantic Search "Brain"

Company Also Introduces New "Visualize & Compare" Tool for LexisNexis TotalPatent Product, Allowing Researchers to Compare Results Between Boolean, Semantic and Other Searches

LONDON, April 7, 2011 - LexisNexis, a leading global provider of content-enabled workflow
solutions, today announced the debut of an innovative new semantic search
"brain" for its full complement of intellectual property (IP) research
products.

The next-generation semantic search technology identifies the meaning of
multiple concepts within a single search query to help users zero in on core
concepts faster and make fewer revisions to their search queries.

The technology will power the patent research and retrieval service
LexisNexis(R) TotalPatent(TM), the automated patent application and analysis
product LexisNexis(R) PatentOptimizer(TM), and IP research across patent and
non-patent literature conducted on the flagship lexis.com(R) online legal
research service.

Semantic search uses the science of meaning in language ("semantics") to
produce highly relevant search results. LexisNexis launched its semantic
search technology 18 months ago, significantly enhancing the search process
for patent researchers through technology that delivers results based on an
analysis of the meaning of the language used in search queries - not just the
words themselves.

The new semantic search technology takes this science to the next level
by enhancing its ability to identify multiple concepts contained within a
single search query. Thus, if a patent researcher asks the LexisNexis search
engine to find information about a complex subject, the new semantic brain
will actually identify various possible ideas contained in that request and
return related concepts for each idea in their query. The researcher can then
review the concepts suggested, assign relative importance by weighting them,
eliminate concepts that aren't related, and even add more concepts they think
might be useful to the search project.

"We believe that the most important brain in the patent research process
is the researcher's own brain," said Steven Errick, vice president of
Research Information at LexisNexis. "When the user experience is combined
with the semantic search capability, it becomes a powerful tool that can
deliver the most precise and relevant patent search results available in the
industry."

LexisNexis also introduced a series of enhancements to its award-winning
TotalPatent service. The most notable addition is a new "Visualize & Compare"
tool that allows users to compare and analyze any two or three result sets or
lists of patents, regardless of the underlying search mechanism, for example
a comparison between a Boolean search result and a semantic search result.

The new comparison capability not only highlights documents that were
uniquely surfaced in one query or list versus another, but also serves as an
important tool to assist researchers in analyzing and improving their overall
search strategy and queries to find the most precise documents. The
comparison tool will also give patent researchers greater confidence that
they have executed the most comprehensive search possible, thereby lowering
the risk of missing crucial documents.

To learn more about TotalPatent, please visit
corporate.lexisnexis.com/totalpatent/.

About LexisNexis

LexisNexis(R) (www.lexisnexis.com) is a leading global provider of
content-enabled workflow solutions designed specifically for professionals in
the legal, risk management, corporate, government, law enforcement,
accounting, and academic markets. LexisNexis originally pioneered online
information with its Lexis(R) and Nexis(R) services. A member of Reed
Elsevier [NYSE: ENL; NYSE: RUK] (www.reedelsevier.com), LexisNexis
serves customers in more than 100 countries with 15,000 employees worldwide.

Media Contact: Ilona Demmers, LexisNexis, +31(20)485-3512, Ilona.demmers at lexisnexis.com