sentences:  The decision of the World Trade Organization Dispute Resolution panel in "Canada – Patent Protection of Pharmaceutical Products case", for example, accepted that it was not inconsistent with TRIPS to provide for distinct patent rules that responded to practical consequences of differences between fields of technology.Almost all nations including the United States now have anti-evergreening legislation as part of their public health policy and none of this legislation (which is clearly targeted at a problem particular to the pharmaceutical industry) has been argued to be contrary to TRIPS.Further, there are a number of obligations imposed by the AUSFTA that relate to the enjoyment of patent rights for pharmaceuticals alone, including extension of the terms of a pharmaceutical patent to compensate the patent owner for unreasonable curtailment of the effective patent term as a result of the marketing approval process(17.9.8(b)).