The defense will make its arguments before Principal Magistrate Ada Yim Shun-yee on Oct. 31.
According to the defense, the Societies Ordinance was unconstitutional, gave an ambiguous definition of a “society,” and had requirements that went beyond what was necessary to protect national security, Asia News reported.
The Societies Ordinance required any club, company, partnership, or association of persons to register with the police commissioner or ask for an exemption within one month of its establishment.
Zen and the other democracy activists could face a $1,200 (HK$10,000) fine for violating the ordinance.
The cardinal was arrested in May along with other democracy activists under Hong Kong’s strict national security law but now faces a less serious charge. He has been free on bail since early May.
All the defendants have pleaded not guilty. Those accused with Zen are lawyer Margaret Ng, singer-activist Denise Ho, cultural studies scholar Hui Po-keung, activist Sze Ching-wee, and ex-legislator Cyd Ho, who is already jailed for a different charge.