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Software industry demands the development of products at a very fast rate with most effective solutions. For this reason most of the components are desired to be reused again and again. Use of design patterns can speed up the process of product development by providing the pre-tested footsteps to follow. Design patterns show their effectiveness from Design phase to maintenance. Design patterns can be analyzed for their quality which is the most necessary aspect of any software structure. This is a metric based study of the design patterns by proposing suitable metrics that are suitable for all the patterns. Higher is the quality of the used design pattern higher will be the quality of the product, with more flexibility towards change and maintenance. We can further extend the paper by determining most suitable design patterns for a problem to solve by providing highly reusable solutions.