DALLAS - Research In Motion Ltd. (TSX:RIM) faces a new patent infringement lawsuit filed by Mobile Telecommunications Technologies, which says certain BlackBerry software infringes on its portfolio of patents.

The suit claims that the BlackBerry maker's email software and equipment infringes on five of Mobile Telecommunication's patents.

The Texas-based company is asking for an injunction and damages paid.

It says it has "suffered, and will continue to suffer, irreparable injury as a result of RIM's infringement," according to the court documents filed Tuesday in a Texas courthouse.

RIM could not immediately be reached for comment.

The company, based in Waterloo, Ont., is no stranger to patent infringement cases.

Patents have become increasingly important in the competitive consumer electronics industry with tech companies routinely suing each other for alleged patent infringements to protect what they've developed.

Ottawa-based Wi-LAN Inc. (TSX:WIN) launched a patent suit against Research In Motion Ltd. (TSX:RIM) in January The suit filed in a U.S. district court in Florida claims that the BlackBerry maker is infringing on two patents belonging to Wi-LAN.

RIM settled a lawsuit in 2010 over patent infringement claim brought by handset maker Motorola Inc. It has also faced off against camera maker Eastman Kodak Co.

In 2006, patent company NTP Inc. won a settlement of more than US$600 million from the maker of the BlackBerry.