Apple and Samsung have been banned from selling some products in South Korea after a decision in one of several international court battles over design and patents.
The South Korean court said that both companies infringed each other's patents.
The ruling said that Apple infringed on two of Samsung's patents, while Samsung infringed on one.
Samsung was found to have copied the "bounce back" feature on the iPhone, which lets users know they have reached the bottom of a screen, but not the design of Apple's products.
"There are lots of external design similarities between the iPhone and Galaxy S, such as rounded corners and large screens ... but these similarities had been documented in previous products," said the judge in the case, quoted by Reuters.
Meanwhile Apple was found to have infringed patents covering transfer of data between devices.
Apple must pay $25,000 in damages, while Samsung has to pay Apple just over half that amount. Both sums are relatively tiny compared to the firms' global revenues - and the billions in damages sought in other courts around the world.
The court imposed a national ban on Apple's iPhone 3GS and iPhone 4, and the first two generations of its iPad tablet. The Samsung ban includes the Galaxy SI and SII, and the Galaxy Tab and Tab 10.1 tablets.
While the decision does not impact the deliberations of the jury in the separate Californian trial, it is a significant chapter in a sprawling global battle over patents.
In that trial, Apple is seeking damages of up to $2.5bn on claims that Samsung copied the design of its iPhone and iPad.
Samsung has retaliated with claims that Apple used its own patented technology in the devices without permission.