"In the case of California Institute of Technology v. Broadcom Limited, what was the Rule of Law?"

Im having a hard time finding getting this question down about this recent case this year, any help is appreciated!

References:

https://www.jdsupra.com/legalnews/latest-federal-court-cases-february-2022-8678188/

https://www.ipwatchdog.com/2022/02/07/cafc-orders-new-trial-damages-clarifies-ipr-estoppel-rule-caltechs-appeal-1-billion-win-apple-broadcom/id=145429/#:~:text=On%20February%204%2C%20in%20a,Institute%20of%20Technology%20(Caltech)%20against