OXFORD, ALA. — Ultraliner Inc. is counter-punching its way into an Alabama federal court.
The Oxford-based maker of folded PVC pipe rehabilitation products announced May 5 it was suing CSR America Inc.; CSR's parent, Hydro Conduit Corp.; and a subsidiary, Pipe Liners Inc. of New Orleans. U.S. District Court in Birmingham, Ala., will be the venue for the suit.
Ultraliner claims its adversaries engage in unfair competition and hold an ``invalid, unenforceable'' patent, according to an Ultraliner news release.
That patent is at the center of a series of court actions CSR initiated this year against at least five competing pipe makers and installers.
CSR holds a number of pipe rehabilitation patents, which it acquired along with Pipe Liners in 1995. The patents describe a process in which a plastic pipe is extruded, folded, installed within a faulty existing pipe and expanded with steam.
CSR uses polyethylene pipe for its system; Ultraliner uses a PVC-based pipe.
The earlier CSR suits named licensed Ultraliner installer G.B. Cooke Inc. of Azusa, Calif., and another PVC pipe extruder, America Pipe and Plastics Inc. of Binghamton, N.Y., and other installers as defendants.