The Supreme Court has weighed in on a patent battle between Samsung and Apple, siding with Samsung by declaring that the patent infringement for an element of a design should be treated differently from the infringement of an entire design.

The dispute between the two tech giants isn't about whether Samsung violated Apple's patents, but rather about how much money it's reasonable for Samsung to pay for the infringement.

Samsung previously had been ordered to pay Apple $399 million in damages. The high court's unanimous decision sends the suit back to a lower court to reconsider what is a reasonable amount.

Here's how NPR's Nina Totenberg and An-Li Herring explained the underlying issue a few months ago:

"The two smartphone giants have been battling each other — not just in the marketplace but also in the courts — since 2011, a year after Samsung unveiled a new set of smartphones, including the Galaxy. Like iPhones, the Samsung products, for the first time, had rounded corners and square icons on a touchscreen."Apple alleged, in part, that its South Korean rival had infringed three design patents for discrete components of the iPhone — the front face of the device, the rounded edges framing the face, and the device's distinctive matrix of colorful square icons."In 2012, a jury ruled in Apple's favor and Samsung was ordered to pay $399 million in damages — all the profits it had made on 11 infringing phone models."Samsung appealed, arguing that it should not have to fork over its total profits; rather, it should only be liable for the specific design elements it infringed."The Court of Appeals for the Federal Circuit, which specializes in patent law, rejected that argument, agreeing with Apple that Samsung had to cough up all of its profits on an infringed 'article of manufacture.'" 'The game then becomes, what's the article of manufacture?' says Daryl Joseffer, who formerly served as principal deputy U.S. solicitor general. 'Is it the cover of the phone which is the design? Or is it the entire phone?'

The Supreme Court unanimously concluded that the "article of manufacture" doesn't have to be the entire phone.

As we reported in May, Samsung has said the laws that govern copyright infringement like this were outdated and due for re-examination. The South Korean tech giant noted that the logic behind the $399 million decision would apply even if an 18-wheel tractor-trailer included design infringement in a single cup holder.

Here's more from our coverage then:

"A smartphone contains thousands of parts, many of which are functional rather than ornamental, Samsung argues. "The law of the smartphone cannot follow reflexively from the law of the spoon," it says in court documents. ..."In its opposing brief, Apple counters by arguing that the law 'could not be clearer': It explicitly holds an infringer liable for the 'total profit,' and not just a portion of it."

In the end, the highest court in the land released a very brief decision that turned largely on definitions.

The Supreme Court, citing multiple dictionaries, concluded there was no reason why an "article of manufacture" couldn't be a component, as easily as an entire product.

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