Juvin was president of the Union of Youths for Progress, a left-wing Gaullist youth movement, between 1989 and 1995. As a member of the Rally for the Republic, he joined the Union for a Popular Movement (UMP) in 2002. He has since held executive position within the UMP's Hauts-de-Seine section.
He is currently Mayor of La Garenne-Colombes, where he was first municipal councillor between 1983 and 2001 before being elected mayor that same year and easily re-elected in 2008.
In the 2009 European elections, he was the fifth candidate on the Union for a Popular Movement list in the Île-de-France region, and was elected to the European Parliament.
Considerably implied in his charge of European member of parliament and very ambitious,he competes for very high functions
From June 2009 to January 2010, date his resignation of the General Council of the Hauts-de-Seine, Philippe Juvin kept his councillor's mandate looking till the definitive validation of the European elections of June, 2009. Philippe Juvin accumulated during this period the functions of mayor, Member of the European Parliament, councillor and department head of a hospital.
After Michel Barnier's nomination at the internal markets and services commission, he solicits at once the UMP groug of PPE presidency . He will be defeated with a very wide majority on February 9, 2010, his colleagues electing Jean-Pierre Audy Conseiller général in Correze less enfeoffed to the French President.
He had chosen to give to the school of his city La Garenne colombes the name of a writer connected with the far right wing (anti-Semite and xenophobe). Under the pressure of his political friends, he gave up finally this name. With more fortune, he also gave the name of his favorite literary character Jean Jerphanion from the Jules Romains's saga " les hommes de bonne volonté " to a nursery school.
October 16, 2009, Philippe Juvin Mayor of La Garenne-Colombes was unsuited by the County court of Paris of its attempt to forbid for illicit disorder a funny blog. He asked for the identity of the bloggers responsible for this site. The Court of Paris also condemned The town of La Garenne-Colombes to pay 1.500 euro in the host Courrier International. According to the project called Big Paris, a quarter of the territory of the city of La Garenne Colombes(the district of Champs-Philippe, which is an area located at the West of the town, would become controlled by EPAD (Public institution for the development of La Defense); this decision would be effective in case of non-opposition of the City Council. Having obtained from the management of the EPAD, verbal insurances, for the sovereignty of the city of La Garenne over the projects of the Champs Philippe district, the City Council expressed a favorable opinion to the project of integration of this district in EPAD ·  Philippe Juvin will be a member of this public institution management. ·  Besides, in October, 2009, he took a stand in favour of the election of Jean Sarkozy as EPAD main manager and justifies his choice by the quotation: " In politics, the only legitimacy, is to be elected " On January 25, 2011, approached by the oil group Total he uses his right of opposition and blocks the European Commission, he wanted " to curb the frenzy of the standards imposed by the Commission". He denounced a decision which does not respect the progressiveness in the application of the plan of reduction of greenhouse gas emissions, and would cause the disappearance the European industry "
- "a MP forgetting his mayor's charge"
- "a busy politician"
- « Site Offciel des Députés Européen UMP»
- " Giving th name of a writer close to the far right wing to a college"
- " Trouble about the name of a college (1)"
- " Trouble about the name of a college(2)"
- " Trouble about the name of a college(3)"
- " Trouble about the name of a college (4)"
- " Giving the name of his favorite novel character to a nursery school"
- « Jugement en référé du 16.10.2009 (TGI- 16 octobre 2009)»
- "l'EPAD s'étendra peut-être sur 8 communes"
- "Courbevoie et l'EPAD"
- « Europolitique.com N° 4124 du 26.01.2011 »