In competitive business patents are crucial analytical benefit. They are determined as gold mine if it is fetched, analyzed and deploy properly. Patent search and analysis are the key step in the patent process and relevant patent may cause expensive legal consequences. In today's world patent collection is enhancing speedily, retrieval of this huge knowledge and information source has become inconvenient and exhaustive. Work mainly glance at literatures dealing with retrieval of patent text and its analysis. Literature review presents various research works that have been carried out to yield better results in patent analysis task.

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