Translate the following English sentence to French:
"The Community patent will co-exist with, and complement, existing systems by offering a more attractive alternative for those businesses, both big and small, operating within the internal market."
Le brevet communautaire coexistera avec les systèmes existants qu'il complétera, car il proposera une alternative plus séduisante aux entreprises, petites ou grandes, actives sur le marché intérieur.