[scromar]

You are right. The fourth paragraph does give some teeth to the agreement. However, the broad language of the second paragraph still gives the assignee a lot of wiggle room to argue that they are not breaking any promises made.

[raldi]

I don't see the nature of the teeth you refer to, unless everyone's making the assumption that all patent inventors are noble and cannot be convinced, at any price, to license their patents for evil purposes.