Vijyes
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TSMC has much more than 25% USA IPs. Also, Wassenar and few other conventions ban selling of IPs of first 3 generations of chips. So, currentl, it is 14nm, 22nm and 28nm chips IP which are prevented from being sold to China. Yet, China has got 28nm and are making 22nm chips fab. This shows that TSMC has not given any license to SMIC. China had to make the chips on its own due to this restrictions. Now, I am not sure about IP theft via espionage charges on china, but in either case, it is clear that no license can be officially given.SMIC was built on the back of TSMC and is now partly owned by it and survives by using their licenses. That is how most Chinese tech companies come to fruition, by stealing IP, getting sued and then buying licenses to stay legitimate. The companies selling the licenses are only issuing dated tech so the Chinese competitor will not be eating into their core market share. I do not know what percentage of TSMC production relies on US IP, but it must be under 25% or they would be subject to sanctions.