Cadila Healthcare is not only a popular name in the pharma industry but also in trademark circle. The people in the trademark fraternity are well aware about the landmark judgment involving Cadila Healthcare, which established the criteria for trade mark passing off action. Last week, the Madras High Court passed an order, i.e. a permanent injunction against Cadila Healthcare, refraining the company from using any similar trademark, as that of  "VENIZ " which belongs to Sun Pharmaceuticals. Sun Pharmaceuticals had  adopted the…