- Northrop Grumman Corp.

sued Agilent Technologies Inc., saying the Palo Alto-based maker of scientific-testing equipment infringed a patent related to electronic filters, Bloomberg News reported. The patent, which L.A.-based Northrop acquired through the purchase of TRW Inc. in 2002, is related to a technology used in filters for wireless devices such as cellular phones, according to a complaint filed in federal court in Los Angeles on Aug. 19.

- Tetra Tech Inc. signed a 5-year, $43 million contract with the Environmental Protection Agency to support efforts to protect the nation's waters and watersheds. The contract with the EPA's Office of Wastewater Management supports the agency's expanding efforts under the Clean Water Act. Tetra Tech will provide technical expertise while addressing water pollution problems and the nation's growing wastewater infrastructure needs, the Pasadena-based environmental management services company said in a statement.

- Global ePoint Inc. announced that its AirWorks Aviation Division entered into a formal agreement with Lufthansa Systems FlightNav, a division of Lufthansa Airlines, to market, sell and provide its digitized data system to commercial airlines and military customers. City of Industry-based Global ePoint said the system is a step toward a paperless cockpit, where a server and database replace heavy print manuals, resulting in fuel cost savings to commercial airlines and cargo carriers.

- Jacobs Engineering Group Inc. announced that a subsidiary company signed a 5-year engineering partnership agreement with Total E & P; NL to provide engineering services for Total's offshore gas production facilities in the Netherlands. Officials did not disclose the contract value.

- Amexdrug Corp. signed an agreement to acquire all of the assets and shares of Dermagen Inc. Financial terms of the deal were not disclosed. The Beverly Hills-based pharmaceutical wholesale business said the acquisition is expected to increase future profit margins for Amexdrug. The company will retain Dermagen's current president and all of its employees. Fullerton-based Dermagen, which is owned and operated by pharmacists, manufactures pharmaceutical products and medical devices.

- TMSF Holdings Inc. , the L.A.-based holding company for The Mortgage Store Financial Inc, reported net income of $3 million (19 cents per diluted share) for the second quarter ended June 30, compared with $2.2 million (15 cents) for the like period a year ago. Revenues rose to $22.1 million from $11 million in the year-ago period.

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