GloFo - Patent Lawsuits

Interesting decision by GloFo to go after some of the biggest names in the industry: https://www.anandtech.com/show/14795...med-defendants

Also interesting that they're not attacking AMD given they also use TSMC and most likely have products including technology described in the patents. I wonder if they have some sort of IP arrangement, or they're just afraid of losing a big customer, and would rather spend money on pursuing others who they have little/no dealings with? Whether or not TSMC developed these technologies independently is another matter, but entirely possible.

The timing is particularly interesting given they've abandoned the cutting-end fabrication market. Also this seems like a potentially very risky thing to do, they open themselves up to a potentially very expensive legal battle against adversaries with much deeper pockets, and are potentially inviting counter-suits - I wonder if/how many patents TSMC patents GloFo may be infringing on?