We analyze contractual clauses which limit the ability of licensees to challenge patents at the basis of their licensing agreements. In particular, we study no-contest clauses, which prohibit licensees from contesting the validity of the patent, and challenge-penalty clauses, which penalize licensees for doing so. We develop a model that we use to compare three legal regimes: "No Restriction, " in which the patent holder is given complete contractual freedom, "Partial Restriction, " in which no-contest clauses are forbidden but challenge penalties are allowed, and "Total Restriction," in which neither no-contest nor challenge penalty clauses are enforced. We show that No Restriction is unlikely to be optimal, and further, we provide necessary and sufficient conditions under which Total Restriction is optimal. The rule we suggest differs significantly from the one currently applied by most courts.
The export option will allow you to export the current search results of the entered query to a file. Different
formats are available for download. To export the items, click on the button corresponding with the preferred download format.
By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.
To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export.
The amount of items that can be exported at once is similarly restricted as the full export.
After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.