On the other hand, the holder of a utility model could still block access by competitors to the specie, which could have a negative impact on product improvement and competition. Thus, the party that selected the specie from the genus would be entitled to compensation from any party using the specie for follow-on improvements but would not be in a position to block access to the specie for such purposes. However, there is a need to delineate the boundaries of the invention so that third parties such as generic producers can be aware of the technological territory that cannot be invaded without risking a suit for patent infringement.252 To do this is the purpose of the patent claims that each patent application has to contain.253 There are several ways of construing a claim to determine the literal scope of the inventor’s exclusive rights (claims construction).