Transformer model for pdf invoice field extraction

Currently looking for a transformer model that can extract pdf invoice fields by it’s semantic meanings (e.g. Billing Address, Price, Tax, …) and that can be integrated into a commercial software product.

Requirements:

  • Open Source
  • Commercial Use
  • Multilingual
  • Python samples

Came accross LayoutXLM, but it appears to be non commercial only. Can someone point me into the right direction?