BASF Subsidiary Sues Apple in the U.S., Alleging Face ID Infringes Seven Facial Authentication Patents

On September 3, 2026, trinamiX GmbH, a wholly owned subsidiary of German chemical giant BASF, filed a lawsuit against Apple Inc. in the Midland Division of the U.S. District Court for the Western District of Texas, alleging that the Face ID facial recognition technology featured in multiple iPhone and iPad products infringes seven U.S. patents held by trinamiX. trinamiX seeks an order enjoining Apple from further infringement and awarding damages, and has requested a jury trial. Apple has not yet issued a formal response.

I. Basic Facts of the Case

Plaintiff trinamiX is headquartered in Ludwigshafen, Germany. It was established by BASF in 2014 as an independently operated subsidiary focused on the research, development, and commercialization of 3D sensing and material detection technologies. According to the complaint, trinamiX's technological origins can be traced back to 2010, when BASF scientists made an unexpected discovery while conducting research on organic solar cells, which led to the fabrication of an early 3D camera prototype. To date, trinamiX holds more than 800 granted or pending patents worldwide.

Defendant Apple Inc. first introduced its Face ID facial authentication feature in 2017 with the iPhone X. The complaint alleges that Apple did not use trinamiX's patented technology when it first launched Face ID, but subsequently updated the Face ID feature in the iPhone 15, iPhone 16, and iPhone 17 series and multiple iPad Pro products by incorporating material and skin detection technology, thereby falling within the scope of trinamiX's patent protection.

The list of accused products specifically includes: the entire iPhone 15 series, the entire iPhone 16 series (including iPhone 16e), the entire iPhone 17 series (including iPhone 17e), iPhone Air, as well as the 11-inch iPad Pro (4th generation), the 12.9-inch iPad Pro (6th generation), and the 11-inch and 13-inch iPad Pro (M4 and M5 chip versions). The complaint also refers to "other infringing iPhone and iPad models" but does not identify them specifically.

II. Patents-in-Suit and Technical Issues in Dispute

The seven U.S. patents at issue in this case belong to two patent families:

The first patent family, "Optical Skin Detection for Facial Unlocking," includes U.S. Patent Nos. 12,530,925, 12,288,421, 12,456,334, and 12,361,760.

The second patent family, "Detector for Identifying at Least One Material Property," includes U.S. Patent Nos. 12,298,394, 12,332,352, and 12,461,238.

The core technology of the above patents lies in projecting a light pattern onto a face and analyzing the reflected light to determine surface properties. Combined with 3D depth information, it can distinguish human skin from photographs, masks, and other materials used to deceive facial authentication systems. This technology is designed to address the security vulnerability of traditional facial recognition systems to "spoofing attacks"—where fraudsters can bypass facial unlocking features using photographs, 3D-printed masks, silicone replicas, and other means.

In the complaint, trinamiX alleges that Apple "knew or should have known that its updating of iPhones and iPads to integrate Face ID by incorporating material and skin detection technology was highly likely to" infringe its seven patents, and has caused "substantial harm and irreparable injury." This language is typical of requests for injunctive relief in patent infringement litigation, intended to persuade the court that monetary damages are insufficient to compensate for the infringement.

III. Choice of Venue and Litigation Strategy Analysis

The plaintiff's choice to file suit in the Midland Division of the U.S. District Court for the Western District of Texas reflects a significant litigation strategy. The Western District of Texas is known in U.S. patent litigation for being favorable to patent holders and for its relatively fast docket. The Midland Division, as a relatively new venue for patent litigation within that district, has attracted an increasing number of patent infringement cases in recent years.

In terms of relief sought, trinamiX requests that the court find Apple liable for infringement, issue an injunction prohibiting Apple from making, using, selling, offering for sale, or importing the accused products, and order Apple to pay damages and attorney's fees. The plaintiff has also requested a jury trial, meaning that if the case proceeds to trial, a jury will determine the facts of infringement and the amount of damages. The complaint does not disclose a specific damages amount.

During the nine months from September 28, 2025 to June 27, 2026, Apple's iPhone sales reached $196.5 billion and iPad sales reached $21.7 billion. The accused products are all core revenue-generating products for Apple. If the court ultimately issues an injunction, the impact on Apple's business would be extremely significant.

The core legal issue in this case is the construction of the patent claims and the infringement comparison. trinamiX's patents cover technical solutions for "optically detecting skin" and "identifying material properties." Whether Apple's Face ID, with the skin and material detection capabilities added in the iPhone 15 and subsequent models, falls within the scope of the above claims will be the key battleground between the parties.

It is worth noting that trinamiX deliberately distinguishes in the complaint between the "initial version" and the "updated version" of Face ID—acknowledging that Apple did not use its technology when Face ID was first introduced with the iPhone X, but alleging that subsequent models integrated patented material and skin detection technology through updates. This strategic formulation narrows the scope of the infringement allegations to subsequent models that adopted material and skin detection technology, helping the plaintiff focus its damages calculation on a more targeted product range and time period.

In addition, since the seven patents at issue belong to two patent families, trinamiX may adopt a "layered" litigation strategy: even if the claims of some patents are held invalid or not infringed, claims in the other patent family may still be upheld by the court.

As of press time, Apple has not issued a formal statement on this case. China Intellectual Property Lawyer Network will continue to follow subsequent developments.