China's Supreme People's Court has ruled in favour of Hitachi Metals, closing an antitrust appeal that the consultancy FTI Consulting describes as a landmark in Chinese competition litigation.

The decision ends the Japanese industrial group's prolonged fight in the Chinese courts. Details of the operative reasoning were not contained in the announcement of the outcome, but the characterisation as a landmark points to significance beyond the parties themselves.

What did the court decide?

The Supreme People's Court, China's highest judicial body, allowed Hitachi Metals' appeal. The dispute reached the country's final judicial instance, which means no further domestic avenue of review remains. That finality matters.

FTI Consulting, which publicised the outcome, framed the ruling as a landmark antitrust decision — language that practitioners have learned to take seriously when it attaches to judgments from Beijing's top court.

Why does a single appeal matter?

Antitrust claims against foreign manufacturers in Chinese courts have grown more frequent as claimants test the boundaries of the Anti-Monopoly Law and, in particular, claims of refusals to deal involving essential inputs. A Supreme People's Court judgment at appellate level does not bind lower courts in the common-law sense. It does, however, guide them.

For practitioners advising multinationals with Chinese supply relationships, the practical consequence is straightforward. A claim structure of the kind Hitachi Metals defeated now carries the imprimatur of the highest court, and plaintiffs' counsel will need to distinguish it rather than simply repeat it.

What should advisers watch next?

The published commentary is brief, and the full judgment will reward close reading. Three questions will occupy competition teams:

• How the court treated the definition of the relevant market in the underlying dispute.
• Whether the judgment clarifies the standard for abuse-of-dominance claims against input suppliers.
• How lower courts apply the reasoning in follow-on private litigation.

The takeaway is plain: Hitachi Metals won, China's highest court agreed, and the antitrust bar now has new reading material.