France owned the Rhineland from the 9th of February 1801, with the annexation of the Cisrhenan Republic (established on the 5th of September 1797, recognized by the treaty of Campo-Formio on the 18th of October of that year). That annexation was recognized at the Treaty of Lunéville the same day, and implicitly at the Treaty of Amiens (March 1802).
Similarly, France formally owned the Southern Netherlands, colloquially refered to as Belgium, since the Treaty of Campo-Formio, though the annexation was proclaimed on the 1st of October 1795.
Piedmont was effectively occupied by French troops since 1796, and though its fate was not touched at Campo-Formio, Lunéville, nor Amiens, the area was surrounded by French puppets at Campo-Formio, effectively recognizing it as a de facto French possession. In addition, two short-lived republics were founded on its territory, before its final annexation in 1802. In addition, at Cherasco, the King of Sardinia signed away Savoy, Nice, as well as Tende and Beuil.
Since France was fully at peace between 1802 and 1804, unlike previous periods of revolutionary conflict and later ones wherein France remain at war with at least one of the coalised powers, the situation of 1803 must be treated as the point of reference to which the results of the peace of Vienna are compared.