SAN JOSE, Calif.--Samsung Electronics Co. (SSNHY, 005930.SE) accused Apple Inc. (AAPL) of violating three Samsung patents as the high-stakes patent trial between the companies continues its second phase. Samsung lawyers called Woodward Yang, a professor at Harvard University, to make a case that Apple's mobile devices infringed a series of patents covering email, photo albums and playing music on mobile devices. Among them, Mr. Yang discussed videos that showed how music plays in the background of the iPhone, how photos can be placed into an email and how photographs can easily be scrolled through on the devices. Mr. Yang is the fourth witness Samsung has called as it attempts to both prove that Apple infringed its patents and defend against the Cupertino company's claims that it had done the same. Apple rested its case Monday, and Samsung began presenting its own case later that day. Apple sued Samsung last year after several high-level meetings between the two companies in which Apple told Samsung it believed the South Korean tech company's products were copying its own. The two companies have since locked horns in courtrooms around the world, attempting to slow one another's sales or take some share of their profits. For its part, Apple has claimed Samsung should pay $2.5 billion for its actions. In Apple's cross-examination of Mr. Yang, the iPhone maker said that Samsung did not claim to be producing devices that use two of the patents it asserted against Apple. Those patents cover photo albums and inserting photos into emails. Apple also played the deposition of Jeong-Seok Oh, a Samsung designer who had been credited with inventing the technology behind one of the patents, who said he had prepared documents for the patent but they had subsequently been "discarded." The video deposition may play a role in the issue of instructions that will be given to the jury before they begin deliberations. They are expected to inform the jury that Samsung had failed to stop evidence from being destroyed, while leaving it to jurors to decide the importance of the company's actions. Samsung also brought Clifton Forlines, a software developer, to the stand. Mr. Forlines had created software applications for a device called the "DiamondTouch," a table-top touchscreen computer that Samsung discussed at length at the end of Monday's proceedings. Samsung brought up the DiamondTouch to help prove to the jury that Apple did not invent the technology behind its patents, effectively attempting to invalidate them. Mr. Forlines further discussed two applications he created about eight years ago for the device. One of those applications allows people to zoom in and out of an image in a similar way Web pages, photos and maps can be zoomed in and out of on the iPhone today. Apple argued that the applications don't work in the same way, and that the technology behind the DiamondTouch is different from its own. Write to Ian Sherr at ian.sherr@dowjones.com Subscribe to WSJ: http://online.wsj.com?mod=djnwires
