South Korean anti-trust regulators are reportedly investigating whether tech giant Samsung has breached competition following a complaint from Apple.
"For our probe, we have asked both sides to send related documents," a Fair Trade Commission representative was quoted as saying by news agency AFP.
Companies that own so-called standard essential patents are expected to offer to license them under fair and non-discriminatory terms.
In August, a Korean court ruled that Apple had violated two 3G patents held by Samsung. But if Apple can persuade the Korean FTC that Samsung has been acting anti-competitively, it may be able to reverse that set-back.
The Korean investigation is just the latest twist in a complex, global, legal clash between the two technology heavyweights.
The two are involved in more than 50 cases in 10 different countries, which were instigated after Apple accused Samsung of “slavishly” copying its iPad and iPhone designs.
Last month, Apple was victorious in a $1bn US case, where the jury ruled that Samsung had breached design patents belonging to the Cupertino firm.
Neither Samsung nor Apple had responded to requests for comment on the Korean anti-trust investigation at the time of writing.
Before Ocado could start selling the technology it had developed to other retailers, it had to tear down and rebuild its own monolithic architecture
Successful attack could result in harm to patients and financial loss, warns NHS governing body
Guccifer 2.0 claimed to be a lone Romanian hacker - until a schoolboy error gave him, her or them away
Bug means Siri can be asked to read aloud all your hidden notifications