Born near Liverpool's docks, he attended Sefton Park School in the Smithdown Road area of Liverpool, where he was noted for his essays and greatly encouraged in his work by Harry Sutcliffe his form teacher. He left school at fifteen and began work for The Bootle Times writing a column on popular music. One of his first articles was on Roger McGough and Adrian Henri, two pop-oriented Liverpool Poets who later joined Patten in a best-selling poetry anthology called The Mersey Sound, drawing popular attention to his own contemporary collections Little Johnny's Confession (1967) and Notes to the Hurrying Man (1969). Patten received early encouragement from Philip Larkin.
The collections Storm Damage (1988) and Armada (1996) are more varied, the latter featuring a sequence of poems concerning the death of his mother and memories of his childhood. Armada is perhaps Patten's most mature and formal book, dispensing with much of the playfulness of former work. He has also written comic verse for children, notably Gargling With Jelly and Thawing Frozen Frogs.
Patten's style is generally lyrical and his subjects are primarily love and relationships. His 1981 collection Love Poems draws together his best work in this area from the previous sixteen years. Tribune has described Patten as "the master poet of his genre, taking on the intricacies of love and beauty with a totally new approach, new for him and for contemporary poetry." Charles Causley once commented that he "reveals a sensibility profoundly aware of the ever-present possibility of the magical and the miraculous, as well as of the granite-hard realities. These are undiluted poems, beautifully calculated, informed - even in their darkest moments - with courage and hope."
Patten writes extensively for children as well as adults. He has been described as a highly engaging performer, and gives readings frequently. Over the years he has read alongside such poets as Pablo Neruda, Allen Ginsberg, Stevie Smith, Laurie Lee, and Robert Lowell. His books have in recent years been translated into Italian, Spanish, German and Polish. His children's novel Mr Moon's Last Case won a special award from the Mystery Writers of America Guild. In 2002 Patten accepted the Cholmondeley Award for services to poetry. Together with Roger McGough and the late Adrian Henri, he was honoured with the Freedom of the City of Liverpool. ..