Promising Spam Blocker Stuck In Court?
from the give-up-those-patents dept
Declan McCullough’s latest column is challenging Mailblocks to give up their patents on “challenge-response” spam prevention. While McCullough has spoken out repeatedly against the idea of challenge-response systems, he says that the patents are hindering an open market that should have the chance to compete on its own merits. More importantly, he points out plenty of prior use evidence that should invalidate most of the patents held by Mailblocks. As he points out, the company seems to offer some features that beat the competition, and they should focus on that, rather than trying to sue every other anti-spam company out there.