How difficult is it to prove movie plagiarism in India?

(G.N.S) DT.21 Varun Dhawan and Shoojit Sircar’s October, which released on April 13 to rave reviews, has been accused of being plagiarized from a 2017 Marathi film Aarti – The Unknown Love Story. Though Sircar has denied all charges, Aarti’s filmmakers have decided to take legal action.Here’s a low-down on how difficult it