Source of caption and photo: online version of the WSJ article quoted and cited below.
(p. B1) Jay Walker turned his idea for “name your own price” Internet auctions into a fortune by starting Priceline.com Inc. Now the entrepreneur is trying to cash in on his ideas by suing other companies.
Since it was founded in 1994 as a research lab, Walker Digital LLC has made much of its money by spinning out its inventions, like online travel agent Priceline and vending-machine firm Vendmore Systems LLC, as independent businesses.
. . .
Mr. Walker defends his newly aggressive tactics, which some critics compare to those of “patent trolls,” a derogatory term for firms that opportunistically enforce patents. Without the lawsuits, he said, his patents could expire while other companies exploit them. Patents have a 20-year lifespan.
“Not only are we not a troll, but the people who want to label me are often the same ones that want to use our property and not pay,” Mr. Walker said in an interview.
For the full story, see:
JOHN LETZING. “Founder of Priceline Spoiling for a Fight Over Tech Patents.” The Wall Street Journal (Mon., August 22, 2011): B1 & B10.
(Note: ellipsis added.)