He aligned himself with the July Monarchy and held various positions in the legal and political spheres.
Paganel served as a substitute judge at the first instance court of the Seine in 1830 and later became a Master of Requests at the Conseil d'État in 1832.
From 1834 to 1846, he represented Lot-et-Garonne as a deputy, belonging to the conservative majority in the parliament.
In 1840, he assumed the role of Secretary-General of the Ministry of Agriculture and subsequently became the director of stud farms.
Apart from his political career, Paganel was also a member of several learned societies and authored historical works.