I have written a software which supports development processes. (I'm no layer)
One of the first points is patent research.
So I did a short research at www.patents.com
. The starting point was this link:http://digitaldaily.allthingsd.com/2...oth-documents/
The patents have been granted between 1995 and 2010 but often were filled years ago.
An example: http://www.patents.com/Unlocking-a-d...7657849/en-US/
Let's look at this example:
- granted February 02 2010
- filed December 23, 2005
- including 47 references to other patents which sometimes include other patent references
It's not so easy to judge the situation when You develop something new.
The common ways to deal with it are:
- modify your product in a way that you can avoid problems
- get a license from the patent holder
- cross license patents
- buy licensed parts
- ignore the patents and save some money for the lawsuit
I don't know why it took so long to get this patent, but even if a patent isn't granted you can do a research and read it.
hard to say if someone can claim "prior art" but if, HTC should have done a research.
From my point of view Apple is no patent troll. They did the research, invented the technique and made a product available for purchase.
Not sure if I'm right at this point, but I think the other facts from this post are valid for those who want to form their personal opinion.