His teaching and writing interests are in the area of intellectual property law with an emphasis on patent law. Currently, Professor Rantanen teaches Trademarks and Unfair Competition in the fall and Introduction to Intellectual Property and Patent Law in the spring. Professor Rantanen obtained his Master's Degree in History and JD from the University of Chicago, where he graduated with honors, served as a member of the University of Chicago Law Review, and was awarded the Order of the Coif."