These patents relate to touch input.
Neodron sued Apple for allegedly infringing four patents. They are all connected to touch input technology and were originally issued to Atmel, which was acquired by Microchip Technology in 2016. According to Neodron, patents are infringed on third-generation Apple iPhone 11 and Apple iPad devices.
The lawsuit contains patents Nos. 7821425, 7903092 8749251 and 9411472, issued by the US Patent Office.
Note that Neodron produces no products and exists only through patent trolling. She had previously filed lawsuits of this kind against HPE, Dell, Amazon, Microsoft and other companies.