The paper investigates competition in price schedules among vertically differentiated producers. First order price discrimination leading to personalized prices is the perfect equilibrium of the two-stage game where firms choose at the first stage to commit or not to a uniform price and compete...

This paper investigates the choice of an intellectual protection regime for a process innovation. We set up a multi-stage model in which choosing between patent and trade secrecy is affected by three parameters : the patent strength defined as the probability that the right is upheld by the...