What is a document that defends inventions against copycats?

What is the full form of oak in java? How do you join steel pipe to PVC pipe? What country are your gas hot water heaters made in? What is one way in which the dactory work changed peoples lives? Does xml document support both human readable and machine readable formats? What is the function of the expansion vessel? What are the methods of Data validation? How do you check the choke is working or not? What sizes do a p-trap come in? What is grounding - grounded - neutral? What are different Constructor and finalize in java? Why do most sites use http and HTML? What principle emf induces in secondary winding of transformer? What is the best building material for Speaker Cabinets? A sentence with John Deere? What is the formula in finding the reduced size wire if the resistivity is increased? What does overhead valve mean? What will be the output of the integrator circuit if step function is applied? How do i do a system recovery on an hp pavilion xt963? What does skid mounted mean?