Disclosed is an adhesive patch which effectively inhibits the occurrence of oozing or squeezing out of the adhesive layer component from the exposed area of the adhesive layer of the adhesive patch during storage and also inhibits the occurrence of oozing of bisoprolol or salts of same from the adhesive layer thereby preventing reduction of drug content. A backing material a release liner and an adhesive layer respectively along with the entire adhesive patch are shaped into a planar rectangle wherein the corners of the adhesive patch are formed into convex shapes on the rear surface on the backing material side. Further the adhesive patch has a central part and edges wherein the corners of the rectangular shape of the central part can also be formed into convex shapes and furthermore it can be provided with built up articulated sections between two or more adjacent convex parts wherein the thickness of the adhesive patch is thinner than the thickness of the adhesive layer at each convex part. If the release liner is provided with a split at the back the split should not traverse the convex parts.
