If the technology used was used after a patent application was filed, but the patent was later authorized, is it still considered infringement?

Items published before the authorization date are not considered infringement, but appropriate fees need to be paid.

Any subsequent use after authorization will be considered an infringement.

Article 11 of the Patent Law: After an invention or utility model patent is granted, no unit or individual may exploit the patent without the permission of the patentee, except as otherwise provided in this Law. , that is, it is not allowed to manufacture, use, offer for sale, sell, or import its patented products for production and business purposes, or use its patented methods, or use, offer for sale, sell, or import products directly obtained according to the patented method.