Balancing Interests in Patent Litigation: The Rise of Conditional Enforcement in China

I. Introduction and Case Overview

In the complex landscape of Chinese intellectual property (IP) litigation, a “binary” system exists where patent infringement cases are heard by courts while patent validity is determined by the China National Intellectual Property Administration (CNIPA). This separation can lead to procedural delays, especially when a patentee abuses the system to suspend invalidation proceedings while pushing for an infringement ruling. A landmark case involving an “anti-gravity water droplet humidifier” utility model patent has recently showcased an innovative judicial solution by the Supreme People’s Court (SPC) of China.

In this case, the patentee (Company A) alleged that Company B infringed its utility model patent. The court of first instance ruled in favor of Company A, ordering Company B to stop the infringement and pay RMB 150,000 in damages. Company B appealed to the SPC.

II. The Discovery of Procedural Abuse

During the second instance, the SPC discovered a suspicious timeline. Before filing the lawsuit, Company A entered into a private lending agreement with an outsider (Company C). Shortly after the infringement suit began, Company C filed a dispute, leading a court to place “property preservation” measures on the patent at issue. Under Chinese law, such preservation measures automatically suspend any pending invalidation procedures at the CNIPA.

Because Company A and Company C reached a settlement to pay back the loan in phases through August 2026, the patent’s invalidation proceedings were effectively frozen for over three years. This prevented Company B from using the invalidity of the patent as a defense, even though the SPC believed there was a high possibility that the patent’s core claim (Claim 8) was indeed invalid.

III. The Conditional Enforcement Ruling

To prevent the patentee from unfairly benefiting from this self-created delay, the SPC issued an innovative “Conditional Enforcement Ruling”. While the SPC confirmed that Company B’s products fell under Claim 8, it attached specific conditions to the enforcement of its judgment:

• Precondition: The ruling to stop infringement and pay damages (adjusted to RMB 10,000) can only be enforced after the CNIPA officially upholds the validity of the patent.
• Suspension of Obligations: Until the CNIPA validates the patent, Company B can temporarily suspend its obligations to pay or stop production.
• Interest Protections: To protect the patentee if the patent is eventually found valid, interest begins accruing from the date of the SPC’s second-instance ruling.
• Invalidation Clause: If the CNIPA eventually declares Claim 8 invalid, the ruling will not be enforced at all.

IV. Significance and Impact

This ruling represents a significant development in Chinese judicial practice for several reasons:

• Curbing Bad Faith Litigation: It sends a clear message that courts will not tolerate the abuse of procedural loopholes, such as using “bad-faith suspensions” to shield unstable patents from scrutiny.
• Balancing Equity and Efficiency: By reversing the interest accrual to the date of the second instance but delaying actual payment, the court balances the patentee’s right to compensation with the defendant’s right to a fair defense.
• Promoting Good Faith: The ruling reinforces the principle of “good faith” in the business environment, ensuring that market entities are protected from dishonest litigation tactics.

In conclusion, the SPC’s “artistic” resolution of this case provides a new model for handling intertwined infringement and invalidation procedures. It ensures that while IP rights are protected, the legal process cannot be weaponized to harm legitimate competition.