They have filed the case under US District Court for the Central District of California. Caltech claims that Apple has used their technology in their latest Apple Watch, iPhone and Mac. Caltech claims that Apple did not do the infringement alone. They say that they worked with Broadcom, Apple's biggest WIFI provider.
Caltech wants Apple to stop selling devices with their technology in the US. Seeing that the technology from Caltech is already vital in the 802.11n and 802.11ac WiFi standards, the companies may have to pay a hefty fee to acquire legal ground to use the technology.
"Broadcom manufactures, uses, imports, offers for sale, and/or sells Wi-Fi products that incorporate IRA? LDPC encoders and/or decoders and infringe the Asserted Patents," said Caltech in their official complaint. "Broadcom products that incorporate IRA/LDPC encoders and/or decoders and infringe the Asserted Patents include, but are not limited to, the Wi-Fi products listed in Appendix 1."
This is not the first time that Apple has had a legal battle with a university. In 2015 Apple was ordered to pay damages to University of Wisconsin-Madison for infringing on the university Processor technology. Apple paid an $18 billion for it. But experts believe it was a small price to pay to get the processor rights.