Patentable Subject Matter: The types of inventions that are eligible for patent protection, which must have utility, be novel, and be non-obvious.
Enablement:The requirement that a patent application must disclose the invention in sufficient detail for a person skilled in the art to make and use the invention without undue experimentation.
Novelty:The requirement that an invention must be new and not already known or used by others to be eligible for patent protection.