Infineon sues Volterra over four US patents

BANGALORE, INDIA: German chipmaker Infineon filed a patent infringement lawsuit against low-voltage power supply chipmaker Volterra Semiconductor Corp, seeking damages and injunctive relief.

Infineon said that Volterra's voltage regulators and pulse width modulation controllers infringe four of its U.S. patents.

Infineon filed the lawsuit against Volterra in the U.S. District Court for Delaware on Thursday, the company said in a statement.

Volterra had previously sued Infineon in November 2008 for patent infringement in the U.S. Court for the Northern District of California.

In July 2009, Volterra filed a motion in that matter for a preliminary injunction, which was later denied by the district court, Infineon said.