Weatherford International, Inc. et al v. Halliburton Energy Services, Inc. et al, No. 2:09-cv-00261 (E.D. Tex. Aug. 5, 2011)

From the Opinion

The passage below is extracted verbatim from the opening of the document. It has not been editorially summarized — consult the full opinion for the court's complete reasoning.

I. INTRODUCTION Plaintiffs Weatherford International, Inc. and Weatherford/Lamb, Inc. (collectively, “Weatherford”) filed suit against Halliburton En ergy Services, Inc. and General Plastics & Composites, L.P. (collectively, “Halliburton” or “Defendants”) on August 27, 2009, alleging infringement of U.S. Patent Nos. 6,712,153 (“the ’153 Patent”) and 7,124,831 (“the ’831 Patent”). On May 21, 2010, Hall iburton counter-claimed agai nst Weatherford alleging infringement of U.S. Patent Nos. 6,695,050 (“the ’050 Patent”) and 5,540,279 (“the ’279 Patent”).