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Obeticholic acid, a chenodeoxycholic acid derivative among human primary bile acids, acts as an agonist for the farnesoid X receptor. This article introduces a process for the preparation of obeticholic acid and discusses the status of related patent applications concerning its crystalline form. By combining the context of the key patent technology and summarizing related aspects of technology evolution and efficacy relationships, this article aims to provide beneficial references for fair patent placement, patent mining, prevention of patent infringement for imitation businesses, as well as the guidance on technological development and the strategic intellectual property considerations for domestic pharmaceutical businesses.
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奥贝胆酸是人初级胆汁酸中鹅去氧胆酸衍生物,为法尼酯X受体(farnesoid X receptor,FXR)激动剂。本文介绍了奥贝胆酸的制备方法以及晶型相关的专利申请状况,梳理了重点专利技术的脉络,总结了相关方面的技术演进和功效关系,旨在为仿制药企业合理进行专利布局、专利挖掘,防止专利侵权提供有益的参考,对国内相关制药企业提供技术发展和知识产权战略方面的建议。
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王星,女,硕士研究生,专利审查员,主要从事药物化学领域专利审查工作。E-mail: wangxing_4@cnipa.gov.cn。
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| 专利号 | 申请日 | 公开日 | 技术分类 |
|---|
| WO2002072598A1 | 20020221 | 20020919 | 结构通式 |
| WO2005082925A2 | 20050228 | 20050909 | 异构体结构式 |
| WO2005089316A2 | 20050314 | 20050929 | 适应证 |
| WO2006044391A1 | 20051014 | 20060427 | 联合用药 |
| WO2010059859A1 | 20091119 | 20100527 | 衍生物 |
| WO2013192097A1 | 20130617 | 20131227 | 晶型 |
| WO2014066819A1 | 20131025 | 20140501 | 制备方法 |
| WO2014085474A1 | 20131126 | 20140605 | 适应证 |
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达格列净的重要专利情况
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| 专利号 | 申请日 | 公开日 | 技术分类 |
|---|
| WO2002072598A1 | 20020221 | 20020919 | 结构通式 |
| WO2005082925A2 | 20050228 | 20050909 | 异构体结构式 |
| WO2005089316A2 | 20050314 | 20050929 | 适应证 |
| WO2006044391A1 | 20051014 | 20060427 | 联合用药 |
| WO2010059859A1 | 20091119 | 20100527 | 衍生物 |
| WO2013192097A1 | 20130617 | 20131227 | 晶型 |
| WO2014066819A1 | 20131025 | 20140501 | 制备方法 |
| WO2014085474A1 | 20131126 | 20140605 | 适应证 |
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