Predatory pricing occurs when you sell a product at such low prices that it deters other companies from entering the market. Apple has many flaws but that isn't one of them.

You are correct that patents are considered a form of monopoly, but that is a different sense of the word than what the OP refers to, that is, holding a monopoly over a particular good or market. Apple doesn't have a monopoly in any of the markets it participates in and there are plenty of substitute goods and competitive corporations within the same markets.