Patent – Infringement. The Chancery Division made rulings in a case concerning products used to treat plaque psiorasis and psoriatic arthritis in adults. The court held that, among other things, the claimant company's proposed amendments to the claims were allowable, subject to some minor exceptions. Claims 1, 2, 13, 14 and 15 of the patent were obvious over two pieces of prior art, as were claims 12, 20 and 22, in so far as they were directed to the condition RA, a chronic inflammatory autoimmune disease that mainly affected the small joints of the body.