The Supreme Court of the Netherlands (De Hoge Raad) ruled on an interesting question of patent claim scope earlier this year.  The case, Bayer/Sandoz, ECLI:NL:HR:2016:196, involved a much-litigated patent on the synthesis of drospirenone, a component of some birth control products. The question at issue was whether, because the claims mentioned only a ruthenium catalyst while the specification also disclosed the use of other metals as catalysts, the claims could.. Read More