Apple (Nasdaq: AAPL), the world's most valuable technology company, won its second legal victory in a month over Samsung Electronics (Seoul: 005930) in its long-running patent wars.

A judge at the U.S. International Trade Commission found that Apple hadn't violated any of Samsung's patent rights for products designed into the iPhone and iPad product lines. Last month, a jury in U.S. District Court in San Jose, Calif., determined Samsung had infringed upon Apple's patents and awarded the Cupertino, Calif., company $1.05 billion in compensation.

The case at the ITC, a quasi-judicial agency based in Washington, was brought by South Korea's Samsung in June 2011, alleging four of its patents had been infringed. They were for data transmission, detecting phone numbers in e-mails and displaying a document by swiping a screen with a finger.

Samsung, the world's biggest seller of smartphones, is also a major supplier to Apple. Indeed, it may be the manufacturer of the A6 processor at the heart of the new iPhone 5.

Apple has a separate case pending before the ITC alleging patent infringement, for which a written decision is expected Oct. 19.

Apple shares closed at a record $691.28, up $8.30, on Friday.