Pratt esclates court row with Rolls-Royce

* Pratt files complaints in U.S., British courts

* Patents on turbofan blades at issue

BOSTON, Nov 5 (BestGrowthStock) – U.S. aircraft engine maker Pratt
& Whitney escalated its legal battle with Rolls-Royce Group Plc
(RR.L: ) on Friday, filing complaints in U.S. and U.K. courts
charging its British rival with violating a patent.

The moves come at a time when Pratt, a unit of United
Technologies Corp (UTX.N: ), and Rolls have already sued each
other alleging violations of patents on fan blades used in jet
engines.

Pratt’s latest complaints came in U.S. District Court in
Connecticut, in Britain’s High Court of Justice and at the U.S.
International Trade Commission.

The East Hartford, Connecticut-based company’s suit seek
cash damages and, in the case of the action at the ITC, for the
U.S. to ban imports of Rolls engines that infringe Pratt
patents.

Rolls has also sued Pratt over this issue, contending it
has the valid patent for fan blade design. Rolls-Royce
officials could not be reached for immediate comment.

The fight comes at an important time for Pratt, which aims
to land its next-generation geared turbofan engine on Airbus
(EAD.PA: ) or Boeing Co’s (BA.N: ) best-selling narrow-body jets.

Pratt is challenging Rolls engines, including the Trent 900
— the engine model that failed on an Airbus A380 operated by
Qantas Airways Ltd (QAN.AX: ) on Thursday, prompting the airline
to grounds its fleet of the world’s largest aircraft.
[ID:nSGE6A401F]

The U.S. federal court case is United Technologies v.
Rolls-Royce, U.S. District Court, District of Connecticut, No.
10-01523.
(Reporting by Scott Malone; editing by Andre Grenon)

Pratt esclates court row with Rolls-Royce