The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →China’s Supreme People’s Court (SPC) did not overturn the lower court in the construction dispute behind a misleading “patent-related antitrust” headline. In civil judgment (2024)最高法知民终456号, published May 6, 2025, the SPC Intellectual Property Court rejected the appeal and kept the first-instance result in a private damages case involving a ready-mixed-concrete cartel.
The case was handled by the Intellectual Property Court, but the published facts identify no patent-infringement claim. The dispute concerns a horizontal monopoly agreement, an effective regulatory penalty and a construction buyer’s claim for the higher prices it paid.
As an Amazon Associate I earn from qualifying purchases.
What the SPC actually decided
The respondent, Guangxi Construction Engineering Group Co., had bought ready-mixed concrete from the appellant, Chongqing Jian某 Concrete Co. The buyer argued that two independent producers in Fengdu county had coordinated their conduct and that the coordination left it unable to obtain a competitive alternative when its supplier stopped deliveries.
Recommended Free Tools
The SPC rejected the supplier’s appeal. It maintained the first-instance disposition and treated the judgment as final. The official decision ends with “本判决为终审判决。” (“This judgment is a final judgment.”)
#1 Best Overall
How the concrete cartel operated
In 2014, the two producers agreed to divide the local market geographically, allocate sales volumes and profits, fix standard prices and monitor one another by exchanging employees and records. Their arrangement used a C30 concrete benchmark price and included rules for pump and transport charges.
The Chongqing Municipal Administration for Market Regulation found that the companies had fixed sales prices and divided the concrete market, violating China’s 2008 Anti-Monopoly Law. In 2021 it fined the concrete company 10,979,561.69 yuan. The company did not seek administrative reconsideration or judicial review, so that penalty decision became effective.
Why the construction buyer claimed damages
The construction group had a 2017 supply contract. In August 2018, the supplier sought a price increase. When the buyer initially refused, deliveries stopped. The buyer said concrete’s project-specific and time-sensitive nature, combined with the cartel’s control of local supply, prevented it from switching to an unaffected source and caused project delays and related losses.
Free tools Windows power users keep installed
One-click scans. No signup required.
The parties signed a supplemental agreement on September 12, 2018. It raised every listed concrete grade by 90 yuan per cubic meter. From November 2018 through April 2020, the supplier delivered 5,192.5 cubic meters at prices 90 yuan above the original contract. The buyer calculated the claimed overcharge at 467,325 yuan.
| Item | Recorded figure | What it represents |
|---|---|---|
| Regulatory fine | 10,979,561.69 yuan | Fine imposed on the concrete company by the Chongqing Municipal Administration for Market Regulation in 2021 |
| Contract price increase | 90 yuan per cubic meter | Increase applied to every listed concrete grade under the September 12, 2018 supplemental agreement |
| Post-agreement deliveries | 5,192.5 cubic meters | Volume delivered from November 2018 through April 2020 |
| Claimed overcharge | 467,325 yuan | Buyer’s calculation of 5,192.5 cubic meters multiplied by 90 yuan per cubic meter |
Why the effective penalty mattered in the civil case
The SPC held that the effective administrative penalty established the cartel’s basic facts unless the supplier produced contrary evidence. That does not automatically resolve every damages question, but it gives a private claimant a substantial evidentiary foundation: the existence and principal conduct of the horizontal agreement no longer had to be proved from scratch.
The supplier argued that the higher prices reflected market information or increases in input costs rather than the cartel. The court rejected that explanation. Local published concrete prices could not serve as an unaffected competitive benchmark because the published figures were themselves based on prices reported by the two cartelists. A benchmark built from cartel prices risks reproducing the overcharge instead of measuring the price that would have prevailed without coordination.
Why the court extended the cartel’s effect beyond March 2019
The supplier also argued that any harmful effect ended when the companies formally stopped their arrangement in March 2019. The SPC disagreed on these facts. The supplier did not disclose the cartel to the buyer and did not voluntarily reduce the buyer’s price after the formal arrangement ended. The court therefore found that the adverse pricing effect continued through the deliveries made in April 2020.
This reasoning separates the end of an agreement from the end of its economic consequences. A buyer contracting during the cartel period, or during a reasonable period afterward, may still show loss when the participant continues charging a price shaped by the earlier coordination.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What this means for proving a cartel overcharge
The SPC’s accompanying case analysis describes a rebuttable presumption. When a transaction party purchased from a cartel participant during the monopoly period or a reasonable tail period afterward, and the defendant supplies no rebuttal evidence, the buyer may be presumed to have suffered loss caused by the horizontal monopoly agreement.
That framework does not eliminate the need for a coherent damages calculation. A claimant should organize evidence around four questions:
- Was the administrative decision final? A penalty that became effective without reconsideration or judicial review can establish the cartel’s basic facts.
- When did the purchases occur? Contracts and deliveries should be placed against the cartel period and any reasonable post-cartel tail period.
- What is the competitive counterfactual? The proposed benchmark must be independent of prices reported or set by the cartelists.
- Can the defendant rebut causation or loss? Evidence about genuine cost changes, independent pricing decisions or an unaffected alternative benchmark may matter if it is credible and supported.
How to read the “patent-related” label
The SPC Intellectual Property Court’s involvement explains why some descriptions attach a patent label to the case. Court assignment does not turn the dispute into a patent case. The official judgment identifies a ready-mixed-concrete market, a regulatory finding under the 2008 Anti-Monopoly Law and a private claim for cartel-related overcharges; it does not identify patent infringement.
Accordingly, two common summaries are inaccurate: the SPC did not reverse the lower court, and this was not a patent-infringement ruling. The decision is significant instead for how China’s top court treats a final administrative antitrust penalty, post-cartel pricing and proof of private damages in a construction-supply market.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
