“Through our legal representatives, we are engaged in licensing discussions ..."

Perhaps the purpose of the PR was to send a message to all infringers that some infringers are actively engaged in licensing negotiations, a fact of which they might not have otherwise been aware. If so, it would suggest that at least some have essentially admitted to infringing. It then follows that if like products/systems (not sure what to call them) have been sold by those not already engaged in licensing negotiotions, the potential to prevail in the suit may be seriously diminished.