Qualcomm is facing a $773-million fine from the Taiwan Fair Trade Commission for abusing its dominance in the mobile chipset market.
Qualcomm’s technologies are dominant in the market.
The company released a statement confirming the fine, saying it relates to business practices in violation of Taiwanese competition law.
Qualcomm disagrees with the fine and will appeal it – which is expected to take place in the coming weeks.
Qualcomm is also facing a $1-billion lawsuit from Apple, which is accusing it of overcharging for chips and failing to pay $1 billion in rebates.
The FTC has also accused Qualcomm of excessive royalties for technologies that are “essential to industry standards”.
Qualcomm also faces an $854-million fine in South Korea, and a $975-million fine in China.