In this post, we examine recent Madras High Court rulings that have overturned patent application refusals. These cases, involving complex topics such as immunological targeting, drug delivery formulations, and polynucleotide libraries, highlight the Court's stance on the necessity for clear and cogent reasoning in patent application rejections. Case Notes Rejection of claim amendments under Section 59 without reasons is not valid, says the Madras High Court. In a case involving a patent application relating to "Immunological Targeting of Pathological Tau Proteins",…