Legal opinions in intellectual property matters, whether they involve patents, trademarks, or copyrights, carry enormous weight in business decisions. To make sure your opinions are soundly based, solidly reasoned, and properly expressed, turn to this practical handbook from three of the nation's leaders in the area. Intellectual Property Legal Opinions cover all forms of IP legal opinions including: patentability - infringement - validity - corporate due diligence - litigation - and more. For each type of opinion, the authors present: background information that shows the necessity and utility of such an opinion - essential elements of a competent opinion - relevant statutory and case law authority controlling certain aspects of the opinion - and real-life examples whenever possible and suggested solutions in the many areas where the courts have not resolved problems. With insightful comments on legal strategy and model opinion letters clauses you can adapt to fit your needs, Intellectual property Legal Opinions will earn a prominent position among your most frequently consulted references.