Law360, New York ( December 15, 2014, 10:50 AM EST) -- Although component part manufacturers such as Takata Corp. have recently been the subject of significant scrutiny, recent decisions from Ohio appellate courts remind us of the general rule that a component manufacturer should not be held liable for a defect in a completed product. Two exceptions to the component parts doctrine arise when: (1) the component part itself is defective or dangerous or (2) the component part manufacturer constructs or assembles the completed product or substantially participates in the design of the completed product. Even in light of those exceptions, however, a component manufacturer will not be held liable where the manufacturer of the completed product retains ultimate control over the design of the product including the integration of the component part into the final product....