[stormen]

In Norway, it's usual for employees to sign intellectual copyright waivers for all work done for their employers. If Trond developed parts of the CB browser and/or other intellectual property whilst working for Opera (during office hours), they could easily claim - and probably win - a case that parts and/or all of the CB browser rightfully belonged to Opera Software. I haven't read their lawsuit, I'm just saying that the case might be more complicated that one person's blog post.

There was an (in parts) similar case to this one in Norway about Nettby.no, the so-called "Fredrik Kristiansen vs Dagbladet" (Google it if you're interested).

[Deestan]

> In Norway, it's usual for employees to sign intellectual copyright waivers for all work done for their employers.

Yes, but that does not seem to be what this is about. On the surface it seems he was re-using good ideas rather than copying over actual work.

The nettby case was about outright copying source code.

[Androidmeda]

Re-using ideas/features he was paid for at Opera? Doesn't that make those Opera's property?

[eliasmacpherson]

Only if the contract signed says so. There's usually a standard section in the contract for this sort of thing so it really depends on that.