11.3.6.2 Obviousness — Combining of Prior Art References is a concept of patent law which refers to the determination of whether a claimed invention is obvious based on the combination of two or more prior art references. This involves looking at the references in combination to determine if the combination of the references would render the claimed invention obvious. There are two types of 11.3.6.2 Obviousness — Combining of Prior Art References: 1. Obviousness-Type Double Patenting: This refers to the situation when two or more prior art references are combined to render the claimed invention obvious, but the same combination has already been claimed in a previous patent. 2. Obviousness-Type Combination: This refers to the situation when two or more prior art references are combined to render the claimed invention obvious, but the combination of the references is not covered by a previous patent.