Judge John K Illikadan served the notice yesterday on a complaint filed by one C P Sasidharan.
The complainant alleged that Kumar, who represents Pathanapuram constituency in the Assembly, had bought a seven-year-old male elephant from the department-owned jumbo shelter in 1994 on the pretext of donating it to Kavilamma Bhagavathy Temple.
Animal right campaigners also recently raised the same issue against Kumar.
Thrissur-based animal rights group Heritage Animal Task Force even lodged a complaint in this regard with Chief Minister Oommen Chandy.
Kumar had resigned from the government following a complaint of domestic violence filed by his estranged wife.