exhibit 2. 1 patent assignment and cross - license and trademark license agreement this patent assignment and cross - license and trademark license agreement ( “ agreement ” ) is entered into as of february 11, 2003 ( “ effective date ” ) by and between the parties, entegris, inc., a minnesota corporation having corporate offices at 3500 lyman boulevard, chaska, minnesota 55318 ( “ entegris ” ), and entegris cayman ltd., a cayman island corporation and wholly - owned subsidiary of entegris, inc. ( “ entegris cayman ” ), and asyst technologies, inc., a california corporation having a principal place of business at 48761 kato road, fremont, california 94538 ( “ asyst ” ). whereas, asyst is the owner of patents relating to wafer and / or reticle containers, including smif pods and front opening unified pods ( “ foups ” ), load ports for interfacing with wafer and / or reticle containers ( “ ports ” ), material handling systems for transporting, storing, delivering and loading smif pods, foups and individual wafers, and systems used to track, identify, manage, control and route lots, carriers, wafers and / or reticles during the manufacture of semiconductor devices ( “ tracking systems ” ). whereas, entegris and entegris cayman are the owners of patents relating to wafer and / or reticle carriers and containers, ports, and / or tracking systems. whereas, entegris, entegris cayman, and asyst are parties to that certain asset purchase agreement, dated as of february 11, 2003 ( the “ asset purchase agreement ” ) under which the parties have agreed to transfer and to license certain patents relating to wafer and / or reticle containers, ports, material handling systems and / or tracking systems. in consideration of the above, entegris, entegris cayman, and asyst agree as follows : article 1 definitions 1. 1 “ pod and carrier patents ” means united states and foreign patents issued on or before the [ * ] anniversary of the effective date having claims directed to sealable, transportable containers, wafer and / or reticle carriers and containers, or components of wafer and / or reticle carriers and containers, including, but not limited to, the