Samsung has lost its latest claim in a long-running global copyright battle against bitter rival Apple, a surprise blow to the electronics giant in its home market.
On Thursday, a court rejected Samsung's claims that some Apple products had infringed on three of its patents covering messaging technology for mobile devices.
It's the first time a South Korean court has ruled against Samsung in its battle with Apple. Samsung described Thursday's ruling as "preliminary" and indicated it would continue its battle at home.
"We are disappointed by the court's decision. As Apple has continued to infringe our patented mobile technologies, we will continue to take the measures necessary to protect our intellectual property rights," Samsung said in a statement.
The ruling dealt a blow to Samsung's efforts to build its case over patents covering the designs and functions of smartphones.
Samsung had launched the lawsuit in a bid to stop the sale of some of Apple's iPhone and iPad models in South Korea. But the court rejected all of Samsung's claims against Apple, including a request to pay $US95,092 ($A105,423.50) in damages.
The court noted that two of three patents in dispute are invalid because they can be easily developed using existing technologies.
The two tech giants have been locked in a prolonged patent war in more than 10 countries, with each accusing the other of infringing on various patents.
A German court ruled in favour of Samsung against Apple earlier this week. Apple's claim that Samsung infringed a patent on language-input technology in mobile devices was rejected.
In the US market, Samsung had been seeking a ban against some older Apple products claiming that they infringed on Samsung's "standard-essential" patents that must be licenced under fair and reasonable terms because they can be part of a mobile standard.
But in August, the Obama administration vetoed an import ban on some Apple products in the US, citing concerns about patent holders gaining leverage as well as potential harm to consumers.
In November, a US federal jury ordered Samsung to pay $US290 million ($A321.51 million) in damages to Apple in a partial retrial of a blockbuster patent case.
The US ruling came on top of an original $US640 million ($A709.53 million) award that went to Apple. The outcome brought the total amount that Samsung owes Apple close to the original $US1.05 billion ($A1.16 billion) damage award.
Apple's victory in the US court has had little impact on new products, as Samsung has succeeded in distancing itself from Apple with new products such as its flagship Galaxy 4 smartphones.
After years of following and refining the iPhone's pioneering innovations - a strategy that resulted in bitter patent battles - Samsung has dethroned its rival to become the world's top smartphone maker.
