Habeas header haiku

Reporting spam through SpamCop yesterday, I noticed one had some curious headers:

X-Habeas-SWE-1: winter into spring
X-Habeas-SWE-2: brightly anticipated
X-Habeas-SWE-3: like Habeas SWE (tm)
X-Habeas-SWE-4: Copyright 2002 Habeas (tm)
X-Habeas-SWE-5: Sender Warranted Email (SWE) (tm). The sender of this
X-Habeas-SWE-6: email in exchange for a license for this Habeas
X-Habeas-SWE-7: warrant mark warrants that this is a Habeas Compliant
X-Habeas-SWE-8: Message (HCM) and not spam. Please report use of this
X-Habeas-SWE-9: mark in spam to <http://www.habeas.com/report/>.

I was skeptical, though their press releases claim they’ve successfully sued spammers for unauthorized use of their header haiku.

Habeas wants mailservers to whitelist these trademarked headers. Innocent users of ISPs blacklisted by the shadowy sentinels of SPEWS might benefit. They would insert these headers into their e‐mail, swearing it’s not spam on penalty of violating US trademark law.

But what of spammers outside US jurisdiction? If these tags ever became a reliable way to get around SPEWS, every spamhaus in Taiwan and China would put them in every e‐mail they send. Thus rendering them worthless except, perhaps, as a probable spam indicator.