BASF has taken Apple to court in Texas, alleging that the iPhone maker's facial recognition system infringes seven patents held by its subsidiary trinamiX. The complaint, lodged on Thursday at the US District Court for the Eastern District of Texas in Midland, marks a significant escalation in the German chemical group's efforts to monetise technology developed over the past decade.

The core allegation

According to the filing, trinamiX developed anti-spoofing technology designed to close a security gap in conventional facial recognition systems. Traditional approaches, the complaint argues, remain vulnerable to presentation attacks using photographs, 3D-printed masks and silicone replicas. The patents in suit cover methods for distinguishing live human skin from artificial replicas, a capability that has become central to modern smartphone authentication.

The lawsuit contends that Apple did not incorporate this technology when it introduced Face ID with the iPhone X in 2017. Instead, the complaint alleges, Apple began deploying trinamiX's patented methods in later generations, specifically the iPhone 15, 16 and 17 series, along with iPad Pro models, without a licence. The filing states Apple "knew or should have known" that this use infringed trinamiX's intellectual property and caused "substantial and irreparable harm".

Why Midland, Texas

The choice of venue is deliberate. The Eastern District of Texas, and particularly its Midland division, has long been a favoured forum for patent holders. Judges there have developed deep expertise in intellectual property cases, and local rules tend to move litigation along a predictable timetable. For a plaintiff seeking an injunction, the court's willingness to grant preliminary relief has historically been higher than in many other districts. Apple, like most large technology companies, is a frequent defendant in this court and typically seeks to transfer cases to California, where it is headquartered.

From chemicals to sensors

BASF's move into facial recognition technology reflects a broader strategic shift. The Ludwigshafen-based group acquired trinamiX in 2015 as a startup spun out of its own research operations. Originally focused on near-infrared spectroscopy for material identification, trinamiX pivoted to 3D sensing and biometric authentication, areas where BASF's expertise in advanced materials and optical systems offered a competitive edge. The subsidiary now employs several hundred engineers in Ludwigshafen and has built a patent portfolio numbering in the hundreds across Europe, the United States and Asia.

For BASF, the lawsuit represents a test of whether its investment in sensing technology can generate meaningful licensing revenue. The chemical industry's traditional margins have been under pressure from energy costs and Chinese competition, pushing groups like BASF to extract more value from intellectual property. A successful outcome against Apple would establish a benchmark for negotiations with other smartphone manufacturers, many of which use similar anti-spoofing approaches.

Apple's patent litigation history

Apple is no stranger to patent disputes. The company has been both plaintiff and defendant in hundreds of cases worldwide, ranging from its long-running battles with Qualcomm over modem licensing to more recent fights with smaller entities asserting standard-essential patents. In 2024, Apple settled a dispute with Finnish firm Corephotonics over dual-camera zoom technology, and in 2025 it reached terms with OmniVision on image sensor patents. The company typically prefers to settle rather than risk adverse precedent, but it has also shown willingness to litigate aggressively when it believes patents are invalid or not infringed.

The trinamiX case arrives as Apple prepares to launch its next generation of devices. An injunction, if granted, could theoretically disrupt sales of current models in the United States, though courts have become increasingly reluctant to issue product bans in patent cases involving complex, multi-component devices. More likely is a protracted negotiation over royalty rates, with the threat of an injunction providing leverage.

The technical challenge of anti-spoofing

Facial recognition systems rely on distinguishing a living face from a representation. Early implementations used simple 2D image analysis, which could be defeated by a printed photograph. Apple's original Face ID introduced structured light projection, casting thousands of infrared dots onto the face to build a depth map, making 2D attacks far harder. However, sophisticated 3D masks and high-resolution silicone replicas have demonstrated the ability to fool even depth-based systems. Anti-spoofing technologies address this by analysing material properties: live skin reflects and absorbs light differently from plastic, silicone or paper, particularly in the near-infrared spectrum. trinamiX's patents cover specific methods for capturing and interpreting these spectral signatures in real time on mobile hardware.

Implications for the sensor supply chain

If BASF prevails, the ruling could reshape how smartphone makers source biometric sensors. Apple designs its own Face ID modules but relies on a network of suppliers for components: VCSEL lasers from Lumentum and II-VI, diffractive optical elements from Himax, and assembly by Foxconn and Luxshare. A licensing requirement would add a new cost layer, potentially passed to consumers or absorbed in margins. Android manufacturers, many of which use similar time-of-flight or structured-light sensors from suppliers like Sony, STMicroelectronics and ams OSRAM, would face comparable demands.

Organisations

BASF · Apple · trinamiX