South Korea’s SamsungElectronics said on Friday it was considering adding Apple’s new iPhone 5 to a patent infringement case as part of a long-running global legal battle between the rival smartphone giants. Samsung officials said the company would look into amending itsside of an ongoing patent lawsuit in a US court to include the latest Apple gadget, which went on sale across Asia on Friday and is due to hit US stores later in the day. “Our company considers adding Apple’s iPhone 5 to the(patent infringement) case... but we cannot say when,” a Samsung spokesman told AFP. “Our decision will be made after our company has analysedthe iPhone 5 to see what aspects of its device constitutes patent infringement.” South Korea’s Yonhap News agency quoted market watchers as saying Samsung may use its long-term evolution (LTE) patent portfolio to attack the iPhone 5 — the first Apple phone to use the fourth-generation telecom network. Samsung and Apple —respectively the world’snumber one and two smartphone makers — have been at loggerheads over dozens of patent lawsuits in 10 nations, accusing each other ofcopying technologies and designs. Limit competition Last month, a California court ordered Samsung to pay $1.05 billion for patent infringement. The South Korean firmhas appealed the decision