I don’t know the merits of this case. However, trinamiX is not a patent troll in a strict sense. The company produces real products and doesn’t just make money by suing for patent infringement.
However, it looks like the various cited patents weren’t applied for until at least 2024 so I’m not sure how trinamiX thinks it will win. I’ll have to dig around some more to see timelines.
Edit: The original patents were filed in 2019. There were 2021 and later ones that added to and updated earlier ones.
Here's the timeline
2017: Apple introduces Face ID (worked on it well before then, of course)
2019: trinamiX files first material-detection family
2021: trinamiX files skin-detection family
2023: Apple allegedly adds the relevant material/skin-detection functionality
2025–26: U.S. continuation patents issue (trinamiX filing with updates to their 2019 and 2021 filings)
2026: trinamiX sues.
Importantly, trinamiX, unlike some other companies, is not claiming they ever showed their technology to Apple and that Apple 'stole' or copied it. This is an independent-development patent infringement case. It's more along the lines of "you should have checked patents before doing something".
What further complicates this is that Apple certainly has prior art with FaceID in the iPhone X and continued development along the way. The fight might come down to whether trinamiX's particular ways to identify skin was inventive enough in 2019/2021 and that Apple wasn't already headed that way with their development that Apple's work counts as not infringing.
One question about the strength of trinamiX's case is that the company filed in a historically patent-owner-friendly district. The really notorious one is Eastern Texas, but the Western District of Texas is up there. However, the Western District's strongest plaintiff-friendly judge was Judge Albright in Waco, who recently left the federal bench. It's not clear how this will play out.