We started out with three each of three different types of plants: one member of each set was given water that had been boiled on a gas stove, water that had been boiled in a microwave oven, or water that had not been boiled at all.
Drug patent protection: How long is long enough? A recent Senate committee hearing on Bill S-17, Parliament's effort to comply with international trade rules by extending pharmaceutical patent protection to 20 years, inadvertently opened the door to a broader investigation of the inner workings of the country's pharmaceutical patent legislation.
What is a Patent? A patent is an exclusive right granted for an invention â a product or process that provides a new way of doing something, or that offers a new technical solution to a problem. A patent provides patent owners with protection for their inventions. Protection is granted for a limited period, generally 20 years. Why are patents necessary?