Samsung has lost a second patent infringement suit against rival Apple in Korea, putting more pressure on the Korean electronics giant after it also lost a similar suit in the U.S. last month.
The latest trial began when Samsung filed a suit against Apple at the Seoul Central District Court accusing the U.S. company of infringing three of its patents in March last year.
Samsung cited the iPad 4, iPhone 4S and iPhone 5.
But the court said two of the three technologies constituted no technical advance, having already been used in devices before smartphones came along, and the third was not adopted by Apple.
Samsung voiced "regret" at the decision, signaling a possible appeal.
In its first patent infringement lawsuit against Apple here, Samsung had focused on standard patents which are indispensable in manufacturing products. This time, Samsung took issue with only three general patents.
The latest ruling is expected to complicate Samsung's legal strategy.
Meanwhile, Samsung triumphed over Apple in a court ruling in Germany. The Mannheim district court ruled that Samsung did not infringe any of Apple's patented technologies.