Apple is suing Sanho Corp. for patent infringement. The lawsuit (http://dockets.justia.com/docket/california/candce/5:2010cv04042/231609/) was filed Thursday in the California North District Court in San Jose, though details aren’t yet available.

Sanho (http://www.hypershop.com/) is the company behind the HyperMac line of external batteries for the MacBook, iPod, iPad and iPhone and the HyperDrive portable photo storage device. The company was founded in 2002.