Dear Sona,
I am sorry to tell you that for this season they are done with selection process for admisson of academic session 2018-21. List can be seen here (https://erp.iitkgp.ac.in/IITKGPApplications/index).

If you go by the list given at LSAT-India Asociated Institutes it doesn't give admission through this. Rajiv Gandhi School of Intellectual Property Law shortlists candidates for online test and informs them for online test through email. In case of any difficulty one may call at 03222-282237 or contact at admissions@rgsoipl.iitkgp.ernet.in
I hope it helps!