How explicitly can companies rip off Apple's designs? That's the question we posed recently to Christopher Carani, an IP lawyer with McAndrews, Held & Malloy, Ltd. and the former chair of the Industrial Designs Committee at the American Intellectual Property Law Association. As Carani described, despite obvious knockoff products coming from HP, Lenovo, Asus, Motorola, and other OEMs, it would still be difficult for Apple to make the case for design infringement, given how subjective the laws are and what a tough battle the company has already waged going up against Samsung over the issue.

We wondered though, despite wonky design patent and trade dress rules, could you tell Apple's designs apart from competing products? Here, a 10-question quiz to see if you can tell which products are designed by Apple, and which products are designed by competitors. We've removed logos and replaced backgrounds to make it extra hard. Good luck!

Can you tell which one is the MacBook Pro?

Is this the MacBook Air?

...the real MacBook Air?

MacBook Pro?

That's the iPod Nano watch, right?

That's actually Scott Wilson's iPod Nano watch. I think.

Clearly, the MacBook Pro, right?

This is the MacBook Pro...I think?

This must be the iPad?

Or is this the iPad?

1. Lenovo IdeaPad, left, MacBook Pro, right
2. Asus ZenBook
3. MacBook Air
4. Lenovo IdeaPad
5. Motorola ACTV
6. iPod Nano, Scott Wilson's watch design
7. HP Folio 13
8. Macbook
9 & 10. Both are HP TouchPads

How many did you get right?