Student protesters at Columbia University who took over a building on campus Tuesday morning could face a variety of felony or misdemeanor charges, but probably will not be found guilty of criminal charges, said Martin R. Stolar, a Manhattan lawyer and former president of the New York City chapter of the National Lawyers Guild with more than 50 years of experience defending protesters.

“We’re not talking about jail time here,” said Mr. Stolar, 81. He is not representing any of the…