On 15 October 2002, Patterson was loaned to non-league Slough Town for a period of one month before returning to Vicarage Road. Later that season he had a loan spell with Wycombe Wanderers, scoring twice in four Division Two fixtures.
Patterson was temporarily assigned to non-league Slough Town from 15 October 2002, only to return to his original club, Vicarage Road. He also had a brief stint with Wycombe Wanderers during the same season, scoring twice in four matches.