简单地讲，就是许多制药行业的赢家将会失去的专利保护即将到期。
Simply put, many of the drug industry's biggest earners are about to lose their patent protections.
无品牌非专利药会使药品竞争异常激烈，以美国为例，某专利药在保护期到期后的一年内其价格降幅会超过85%。
Where competition from unbranded generics is fiercest, for instance in America, the price of a given drug falls by more than 85% within a year of patent expiry.
阿斯利康公司也寻求在巴西销售那些专利保护即将到期的产品。
AstraZeneca is seeking approval to sell cheap off-patent drugs to Brazil.
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