Court finds no prima facie case of infringement, citing absence of essential patent features in Xiaomi's `Find Device' and highlights significant nine-year delay by patent holder in filing suit
In a significant ruling on September 7, 2026, the Delhi High Court (Division Bench) dismissed an appeal by Conqueror Innovations Private Limited seeking interim injunction against Xiaomi Technology India Private Limited for alleged patent infringement. The suit concerned patent no. 244963 titled "Communication Device Finder System," which the appellants claimed was infringed by Xiaomi's `Find Device' feature incorporated in its smartphones, tablets, and laptops.
The court upheld the judgment of the Single Judge dated July 4, 2025, which had declined interim relief due to the appellants' failure to establish a prima facie case of infringement. The bench, comprising Justices V. Kameswar Rao and Manmeet Pritam Singh Arora, meticulously analyzed the patent claims, the technology of the respondent's devices, and the delay in initiating legal proceedings.
The patented invention, conceived after a burglary in 2004, involves a security activation element (SAE) embedded in a communication device's flash memory or ROM that enables locating, tracking, and remotely controlling a lost or stolen device even after SIM changes or attempts to disable security features. Key novel features include a flash memory with an auto-reinstall function for critical data such as the message center number and an `auto-answer mode' that silently answers incoming calls allowing the owner to listen to the device's surroundings without the thief's knowledge.
The court found that Xiaomi's `Find Device' feature, which allows playing a sound, locking the device, or erasing data remotely, lacks two essential patented features:
1. The flash memory auto-reinstall capability or a ROM containing a non-erasable message center number as required by Element E2 of the patent claim.
2. The `auto-answer mode' defined as silent automatic answering of calls enabling eavesdropping, as described in Element E3.
The court noted that the appellants' own pleadings originally relied on third-party software downloaded onto Xiaomi devices to support the non-erasable feature, which is neither pre-installed nor mandated by Xiaomi. The message center number, crucial to the invention's functioning, cannot be stored non-erasably in ROM, and Xiaomi's devices did not meet this requirement. Regarding `auto-answer mode,' the court rejected the appellants' attempt to redefine it as mere remote activation, emphasizing that the patent's specification clearly defines this mode as silent call answering for covert listening, a feature absent in the respondent's devices.
Additionally, the court emphasized the nearly nine-year delay between Xiaomi's commencement of sales in India in 2014 and the filing of the suit in 2023. The appellants' claim of first learning about the alleged infringement in 2023 was found unconvincing, especially since their own Form-27 filings indicated prior awareness of similar technologies. This delay weighed heavily against granting interim relief.
The court also observed that the patent had not been substantially worked in India, with minimal commercial exploitation by the appellants, further undermining their case for an injunction. Recognizing that damages could compensate for any proven infringement at trial, the court concluded that the balance of convenience favored Xiaomi and that granting an injunction would cause undue hardship to the respondent.
In dismissing the appeal, the court clarified that its findings were prima facie and would not prejudice the trial stage, where evidence would be examined comprehensively.
This ruling underscores the stringent requirements for establishing patent infringement at the interlocutory stage, especially when crucial patent elements are missing in the alleged infringing product and when plaintiffs delay prosecution. It also highlights the importance of precise claim construction in patent litigation.
Bottom Line:
Patent Infringement - Interim injunction declined due to lack of prima facie evidence of infringement, significant delay in filing the suit, and balance of convenience favoring the respondent.
Statutory provision(s):
Patent Act, 1970 (relevant provisions on patent infringement and interim injunction), Form-27 of the Patents Rules, 2003
