Interdigital Technology Corporation & Ors. v. Xiaomi Corporation & Ors.

In the high-stakes world of standard essential patents, lawsuits are not just about technology, they are about leverage. When a foreign court issues an order designed to stop a company from fighting in another country, the question becomes: can local courts push back? The clash between Interdigital Technology Corporation and Xiaomi Corporation before the Delhi High Court offers a fascinating answer, and a critical lesson for any founder whose business depends on intellectual property.

Interdigital Technology Corporation, a holder of Standard Essential Patents (SEPs), found itself in a royalty rate dispute with Xiaomi Corporation, the global smartphone giant. SEPs are patents that cover technology considered essential to industry standards, meaning every player in the market must use them. Disputes over how much should be paid in royalties for these patents are common, and they often spill across borders. Interdigital had initiated a SEP royalty rate suit in India, seeking to determine fair, reasonable, and non-discriminatory (FRAND) terms for Xiaomi's use of its patented technology. Just as this Indian litigation was progressing, the Wuhan Intermediate People's Court in China issued an anti-suit injunction, an order designed to restrain Interdigital from prosecuting its SEP royalty rate suit in India. Faced with being silenced in its own chosen forum, Interdigital approached the Delhi High Court to challenge this foreign restraint.

The core legal friction was jurisdictional and strategic. Interdigital argued that the Wuhan court's anti-suit injunction was an overreach, an attempt by a foreign court to control litigation that was properly before Indian courts. By seeking to halt the Indian SEP royalty proceedings, the Chinese order interfered with the sovereignty of Indian judicial processes. On the other side, Xiaomi and the respondents leaned on the authority of the Wuhan court's order, effectively arguing that Interdigital should be bound by the foreign injunction. The legal tension centered on a fundamental question: should a party be allowed to use a foreign court order as a weapon to block legitimate litigation in another jurisdiction? The Delhi High Court had to weigh whether the anti-suit injunction itself could be treated as an actionable wrong that warranted Indian judicial intervention.

The Delhi High Court found a clear case for granting ad interim relief in favor of Interdigital. By stepping in to restrain the effect of the Wuhan court's anti-suit injunction, the court signaled that foreign judicial orders cannot be allowed to paralyze litigation that is properly before Indian courts. The interim order preserved Interdigital's right to continue pursuing its SEP royalty rate suit in India, ensuring that the Indian judicial process would not be hijacked by extraterritorial maneuvering. The court's reasoning underscored a powerful principle: Indian courts retain the authority to protect the integrity of proceedings within their jurisdiction, even when faced with conflicting orders from foreign tribunals.

For founders, IP professionals, and startup leaders operating in global technology markets, this case is a wake-up call. If your business relies on standard essential patents or any cross-border IP licensing, you must be prepared for the reality that litigation can become a multi-front war. A foreign court order designed to block your lawsuit is not the end of the road, it can be challenged in Indian courts. The key lesson is to act quickly: the moment a foreign anti-suit injunction threatens your ability to litigate in India, seek immediate relief from the relevant High Court. Do not assume that a foreign ruling is final or enforceable in India. Build your IP strategy with the assumption that jurisdictional battles will arise, and ensure your legal counsel is ready to defend your right to be heard in the forum of your choice.