2003-04: After two and a half seasons of steady but unspectacular play with Hull and Gatineau to begin his career, Dupuis began to turn a corner in February of 2004. Playing for the Olympiques, the 6’0 center garnered national attention by being named the CHL Player of the Week on Feb.9, thanks to an 11-point effort in three Gatineau victories. Dupuis carried that strong play into the post-season, contributing six goals and 10 assists in the Olympiques’ 15 game run to the Memorial Cup championship game. The highlight for Dupuis came in the semi-finals game against Medicine Hat, where he scored the game-winning goal that propelled the Olympiques into the final.
2004-05: Moved to Rouyn-Noranda in the off-season, Dupuis would turn in the most successful campaign of his young career. The fourth-year pivot netted 34 goals and 50 assists on the year, to finish the 2004-05 season tied for tenth in the QMJHL (and first on the Huskies) at 84 points.
2005-06: The off-season brought another change of scenery for Dupuis. He was invited to the Blue Jackets training camp, and netted a goal in a pre-season contest before sustaining a concussion. As a result, Dupuis was sent back to the QMJHL for another season, this time with the Moncton Wildcats and a chance to play under the tutelage of former Buffalo Sabres head coach Ted Nolan. Philippe Dupuis has asserted himself as one of the better forward prospects in the QMJHL.
Dupuis has assumed a role in 2005-06 as a steady veteran presence on a young Moncton squad, and has seen an abundance of playing time with fellow Blue Jacket prospect Adam Pineault (Columbus’ second-round pick in the 2004 draft).
2007-08: Dupuis was acquired by Colorado from Columbus midway through the season on Jan.22. In 46 combined games with AHL Syracuse and AHL Lake Erie, he posted 19 points, eleven with Syracuse and eight with Lake Erie.