Several generic versions also are sold.

其它的几个通用版本均有销售。

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European drug regulators recently created a pathway for generic versions of biotech drugs to come to market.

欧洲药物管理部门近来开创了一条允许非专利生物技术药物进入市场的通道。

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Often, however, the first generic does not have a free run, because patent-owners have taken to selling "authorised" generic versions of branded pills.

然而，在通常情况下，第一个仿制药并不能在市场上自由的销售，因为专利所有人都会采取销售品牌药物的“授权”仿制药的措施进行干扰。

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Generic versions of pills are generally between 30% and 80% cheaper than the brand names.

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That will open the door to cut-rate generic versions, but the copycats may not emerge immediately.

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After 180 days, more companies can sell the generic versions, potentially resulting in a further price drop.

BBC: Novartis: India rejects patent plea for cancer drug Glivec