The Guangzhou Intellectual Property Court has emerged as one of China's most important forums for patent infringement litigation, handling a significant caseload of high-value technology disputes. Understanding how this court calculates patent infringement damages is essential for patent holders seeking to enforce their rights and for accused infringers assessing potential exposure. The court's approach to damages has evolved significantly since the establishment of specialized IP courts in China.

Legal Framework for Patent Damages

Under the PRC Patent Law, patent infringement damages are calculated using four methods in descending order of priority. First, the actual loss suffered by the patent holder may be claimed, calculated based on the reduced sales volume or lost profits attributable to the infringement. Second, if actual loss is difficult to determine, the infringer's illegal profits from the infringement may be claimed. Third, a reasonable royalty may be applied based on the patent license fee. Fourth, statutory damages of up to 5 million RMB may be awarded when none of the other methods can be reasonably calculated. The Patent Law also provides for punitive damages of up to five times the calculated damages for willful infringement, significantly increasing the potential recovery for intentional patent violations.

Evidence and Proof of Damages

The plaintiff bears the burden of proving damages through documentary evidence. For actual loss claims, the plaintiff should submit financial records showing sales volumes before and during the infringement period, pricing data, profit margin analyses, and market share information. Courts may order the infringer to produce its financial records for purposes of calculating illegal profits. If the infringer refuses to produce these records or produces incomplete records, the court may draw adverse inferences against the infringer. Recent cases from the Guangzhou IP Court show a trend toward higher damage awards, particularly in cases involving standard essential patents and well-known technology products, with several awards exceeding 10 million RMB.

Key Words: Intellectual Property, Patents, Trademarks