▁a ▁purchase , ▁a ▁user ▁can ▁use ▁one - click ▁bu ying ▁to ▁use ▁a ▁pre defined ▁address ▁and ▁credit ▁card ▁number ▁to ▁purchase ▁one ▁or ▁more ▁items . ▁ ▁Pat ent ▁ ▁The ▁United ▁States ▁Pat ent ▁and ▁Tra dem ark ▁Office ▁( US P TO ) ▁issued ▁ ▁for ▁this ▁technique ▁to ▁Amazon . com ▁in ▁September ▁ 1 9 9 9 . ▁Amazon . com ▁also ▁own s ▁the ▁" 1 - Click " ▁tra dem ark . ▁ ▁On ▁May ▁ 1 2 , ▁ 2 0 0 6 , ▁the ▁US P TO ▁ordered ▁a ▁re ex am ination ▁of ▁the ▁" One - Click " ▁pat ent , ▁based ▁on ▁a ▁request ▁file d ▁by ▁Peter ▁Cal ve ley . ▁Cal ve ley ▁c ited ▁as ▁prior ▁art ▁an ▁earlier ▁e - commerce ▁pat ent ▁and ▁the ▁Dig ic ash ▁electronic ▁c ash ▁system . ▁ ▁On ▁October ▁ 9 , ▁ 2 0 0 7 , ▁the ▁US P TO ▁issued ▁an ▁office ▁action ▁in ▁the ▁re ex am ination ▁which ▁confirmed ▁the ▁pat ent ability ▁of ▁claims ▁ 6 ▁to ▁ 1 0 ▁of ▁the ▁pat ent . ▁The ▁pat ent ▁exam iner , ▁however , ▁rejected ▁claims ▁ 1 ▁to ▁ 5 ▁and ▁ 1 1 ▁to ▁ 2 6 . ▁In ▁November ▁ 2 0 0 7 , ▁Amazon ▁respond ed ▁by ▁am ending ▁the ▁broad est ▁claims ▁( 1 ▁and ▁ 1 1 ) ▁to ▁restrict ▁them ▁to ▁a ▁sho pping ▁cart