Helps practitioners understand the use issues involved in patenting biotechnological inventions; how to: avoid infringement, draft claims efficiently, clarify ownership of biotechnology patent rights, learn the significance of the Plant Variety Protection Act and the International Union for the Protection of New Varieties of Plants. Also covers issues such as:scope of claim (including the broadening and narrowing of claims); enablement (including the working of an invention without undue experimentation); use concealment of best mode and determination of when the best mode is adequately disclosed; deposits of biological materials, including guidance as to whether applicants should submit materials to a depository.