Designers get really feisty when you call their work “derivative”. I once saw an architect flip a table in a restaurant when one of his peers used the “D-word” to describe his firm’s work. But the fact remains that companies draw heavily from the design languages created by Apple. To claim otherwise not only makes the utterer come off as defensive, it basically confirms what is being alleged.
Take HP as a recent example. At an HP event discussing product design in Shanghai, Stacy Wolff, vice president of Industrial Design at Hewlett-Packard got a little prickly when asked if HP was worried about Apple suing it over the design of some of its Ultrabooks.
I would go back to the TC1000 [Tablet PC] from about 10 years, and that’s a tablet. I think if you look at the new Spectre XT, there are similarities in a way, not due to Apple but due to the way technologies developed. Apple may like to think that they own silver, but they don’t. In no way did HP try to mimic Apple. In life there are a lot of similarities.
Ah, yes. In that big bucket of things we call “life”, similarities are bound to happen. Purely by coincidence.

Crazy happenstance. Such is life.
The thing is, it doesn’t have to be this way. Let’s call something what it is, shall we? Apple provided the inspiration for the Ultrabook lineup. Take a look at Intel’s Ultrabook landing page:

Let's dispense with the charade, shall we?
For the benefit of all those continuing to knock off Apple’s design of the Air, I’ve created a little sound byte that gives credit where its due, but also allows a rationale to “borrow” from Apple. Free of charge. Just click on an ad if you’re going to use it.
We recognize that Apple has been a leader in laptop design and in the MacBook Air, they created one of the most successful marriages of design and performance in the “ultra-portable” class of laptops – the category we now call Ultrabooks. At Company X, we wanted to build on some of the successes that made the Air one of the most popular Ultrabooks, while also addressing a market that Apple by definition excludes: the majority of users that choose Windows in the workplace and at home. We also wanted to build products with features the Air lacks, such as larger screens, HDMI connectivity and a variety of powerful Intel processors. In short, we wanted to provide users with a choice. We feel that the design language inspired by the MacBook Air to be an excellent starting point for an entire category of laptops that are thin and light, but also powerful. With our Ultrabooks, users not only have a choice of operating system, they can choose from among a vast menu of hardware features and price points that suit their particular needs.
That wasn’t so hard, was it?