Cats2D Multiphysics > Developments > Copyright

Cats2D copyright infringement complaint and settlement

Two years ago I sent cease and desist letters revoking the licenses I had granted to Jeff Derby and his research group to use Cats2D. The University of Minnesota legal office responded by asserting ownership rights based on several factual errors regarding the code and its development, then refused to change its position even after I explained these errors to them. Meanwhile Derby and his group continued to infringe on my copyright.

Seventeen months later my attorneys filed a complaint on my behalf against Derby and the University of Minnesota in U.S. District Court for willful copyright infringement. The evidence presented in the complaint is overwhelming. The settlement acknowledges that Goodwin and I are the sole authors of Cats2D. This should have been recognized when I first sent the cease and desist letters nearly two years ago. The university invoked immunity under the 14th Amendment to avoid paying any financial damages or my legal fees. Invoking immunity this way is uncommon, unless you are the U.

Cats2D software is the unpublished joint work of Andrew Yeckel and Ralph T. Goodwin. Copyright infringement will not be tolerated. Cats2D must always be attributed to Yeckel and Goodwin, or Goodwin and Yeckel, and no one else. Cats2D should be cited in this manner:

A. Yeckel and R.T. Goodwin. (2003) Cats2D (Crystallization and Transport Simulator), 
User Manual. Unpublished (