Is the Amazon’s one-click shopping patent still valid? Google could add a ”Buy now” button there, handling customer shipping data and payment and just forward

Is the Amazon’s one-click shopping patent still valid? Google could add a ”Buy now” button there, handling customer shipping data and payment and just forward the order to merchant that serves customer’s location. For smaller vendors it might be interesting to replace AdWords with the possibility to list stuff for sale. Instead of click price, you would tell how big cut of price you give to Google if customer makes the purchase.