The Korea Fair Trade Commission (FTC) are investigating complaints filed by Apple that Samsung Electronics is abusing its dominant position in wireless technology.
The FTC is investigating whether Samsung is unfairly competing in the market by abusing its dominance in wireless technology patents.
European Union regulators have also been investigating Samsung for possible breaches of antitrust rules by accusing rivals of infringing its technology patents.
The investigation could add a headache for Samsung in its global legal battle with Apple. Apple won a landmark victory last month after a U.S. jury found the South Korean firm had copied key features of Apple's iPhone, awarding Apple $1.05 billion in damages. The jury decided Apple had not violated any of Samsung's patents.