CHESTERFIELD, Mo.--(BUSINESS WIRE)--November 06, 2007--

Insituform Technologies, Inc. (Nasdaq Global Select Market: INSU) today announced that it filed a patent infringement suit against AMerik Supplies, Inc. and Erik Nielsen in the Eastern District of Virginia for infringement of Insituform's U.S. Patent Nos. 5,927,341, 6,337,114, and 6,899,832, related to the rehabilitation of lateral pipes extending from main pipelines. Insituform's complaint seeks a judgment of patent infringement, preliminary and permanent injunctive relief, the impounding and destruction of infringing products and damages from AMerik and Mr. Nielsen.

The patents-in-suit are part of Insituform's lateral lining patent portfolio. As an innovator, Insituform obtains patents on its proprietary technology and actively polices and protects its patents. Insituform has granted non-exclusive licenses to certain of its patents to other major lateral lining industry players.

Insituform Technologies, Inc. is a leading worldwide provider of proprietary technologies and services for rehabilitating sewer, water and other underground piping systems without digging and disruption. More information about the Company can be found on its internet site at www.insituform.com.

CONTACT: Insituform Technologies, Inc.
David F. Morris, 636-530-8000
Senior Vice President, General Counsel and Chief Administrative Officer