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.
1 Patents that issued before the 1995 changeover have a term of 17 years from the patent issuance date. 2  Patents that were filed before the 1995 date but issued afterwards get the longer of the two terms. 3  Most patents issued in the past decade have an added term adjustment (PTA) due to delays in examination at the USPTO.