Can the teacher's patent be used in the three-creation competition?

You can't.

According to the competition rules of information display in official website, it is forbidden to use other people's patents. During the preparation of the competition, teachers can help students learn to design software and turn their ideas into works. When applying for a patent, students write a patent manuscript.

The National College Students' E-commerce Innovation and Creative Entrepreneurship Challenge (hereinafter referred to as the "Three-Creation Competition") is a college student competition project organized by the Teaching Steering Committee of E-commerce Major in Colleges and Universities of the Ministry of Education (hereinafter referred to as the Teaching Steering Committee) for colleges and universities across the country (including Hong Kong, Macao and Taiwan), and it is also a key support project of undergraduate teaching quality and teaching reform projects in colleges and universities of the Ministry of Education and the Ministry of Finance.