If you aren't sure which type of MPL file you have, try these steps:

3.1. The Contributor hereby grants the Licensor and any other person who receives a copy of the Covered Software from the Contributor a non-exclusive, worldwide, royalty-free patent license under any patent claims covered by the Covered Software that are necessarily infringed by the Covered Software or by any derivative works thereof.

: If the file came with a specific scientific tool (like those used in geological or water resource modeling ), it is likely a configuration or data input file specific to that suite.