Abstract: Chinese Bayh-Dole like rules grant the government funded patent ownership to the undertaking entity. The university looks like to benefit from this. And the patent output of university has growth greatly after the implementation of Bayh-Dole like rules. But it is founded that the National overall patent output and the university’s patent output are mainly influenced by R&D inputs using the virtual regression analysis. Excluding R&D input factors, we found the implementation of Chinese Bayh-Dole like rules has not promoted university’s patent output. This may be due to the special patent output mechanism of Chinese universities and the property ownership arrangements under the law of obligation.