Interdigital Technology Corporation v. Xiaomi Corporation

In the high-stakes world of cellular technology, patents are not just legal assets — they are weapons in a global chess match. When a foreign court issues an order designed to shut down your ability to defend your own intellectual property, the question becomes: do you surrender, or do you fight back? This case between Interdigital Technology Corporation and Xiaomi Corporation is a masterclass in how the principle of balance of convenience can become a lifeline for patent holders caught in cross-border litigation warfare.

Interdigital Technology Corporation, a holder of Standard Essential Patents (SEPs) — patents that are fundamental to cellular handset technology — found itself in a complex legal standoff with Xiaomi Corporation and others. The dispute centered on alleged infringement of these SEPs, which are critical to the functioning of mobile devices worldwide. The situation escalated when the Wuhan Intermediate People's Court in China issued an anti-suit injunction order against Interdigital. Such an order, if enforced, would have effectively prevented Interdigital from pursuing its legitimate legal remedies in its own jurisdiction. Faced with this existential threat to its ability to litigate, Interdigital approached the domestic court seeking an injunction to restrain Xiaomi from enforcing the foreign anti-suit order.

Interdigital argued that the Wuhan court's anti-suit injunction was an overreach that threatened to halt its legitimate domestic legal remedies. The company contended that allowing a foreign order to dictate what it could and could not do in its own courts would cause irreparable harm — not just to Interdigital, but to the integrity of the domestic legal process itself. On the other side, Xiaomi and the other respondents were effectively seeking to enforce the foreign anti-suit injunction, which would have locked Interdigital out of pursuing its patent claims. The core legal friction was this: can a foreign court's order be used to block a party from accessing justice in another jurisdiction, and should the domestic court step in to prevent such enforcement?

The court ruled in favor of Interdigital, allowing the application and making the ad interim injunction absolute. The court applied the well-established principle of balance of convenience, finding that the irreparable loss Interdigital would suffer if restrained from pursuing its legal remedies far outweighed any inconvenience to the respondents. By granting the anti-enforcement injunction, the court effectively neutralized the Wuhan court's anti-suit order within its jurisdiction, ensuring that Interdigital could continue to pursue its SEP infringement claims without being silenced by a foreign judicial maneuver.

For founders, startup leaders, and IP professionals, this case delivers a critical lesson: when a foreign court attempts to use an anti-suit injunction to block your access to domestic legal remedies, the principle of balance of convenience can be your strongest ally. If you hold Standard Essential Patents or any IP that is litigated across borders, you must be prepared to act swiftly. Document the irreparable harm a foreign order would cause, demonstrate that the balance of convenience tips in your favor, and seek an anti-enforcement injunction without delay. In the global IP arena, the ability to litigate freely in your own jurisdiction is not a privilege — it is a right worth defending aggressively.