The legal action, initiated on Sept. 5 at the Seoul High Court, seeks to overturn both the corrective order and the monetary penalty imposed by the antitrust regulator last month.
The KFTC accused Coupang of manipulating search algorithms and using employee reviews to misleadingly promote its private-brand products, potentially influencing consumer behavior. The fine is the largest ever levied against a Korean retailer.
Coupang had previously warned the KFTC in June that the fines and complaints could lead to halting its fast delivery service and investment plans.
