When, if ever, does the date of use in commerce (20051011 in this one) possibly make a difference, even though the domain name was registered before its "namesake" application was given its registration date? (sorry, just can't readily think of the right words...)
You're not going to like the answer, but on that general question, I have to go with the lawyer's answer and say "it depends", because there is no mechanical answer to the question where you drop in the various dates of filing, first use, registration and domain registration, and come out with a binary answer.
Part of the reason for that is that while, yes we are at a domain forum and that's why we care about trademarks, the trademark registration system wasn't built to specifically address domain name conflicts. Conversely, the domain name system isn't built to embody trademark law.
There are also some differences in the way that intent-to-use (1b) and use-based (1a) applications are treated under US law. Similarly, there are differences between Supplemental and Principal registrations, and registrations which are noted 2(f) (designated acquired distinctiveness in a descriptive term).
What I have said before, but not so much recently (having become a little tired of people demonstrating their inability to appreciate the point) is that when you are looking at a data record in the USPTO, you are looking at a collection of data which, as a whole, paints a larger picture than is captured in any single data item. They all matter. Whether any particular datum is critical in a particular factual context, is going to depend on the factual context.
The alleged date of first use in a US trademark registration under 1(a) is simply an allegation. It is not relied upon for any substantive purpose during examination, but is a required allegation to file on the basis of having used the mark sought to be registered. (Okay, I can think of one situation where it might matter, but it's not important for the purpose of this discussion)
Your question about dates in a USPTO are not as important as what the UDRP is essentially driving at - Why did this person register this domain name? If there are circumstances indicating that the domain name was registered with an intent to damage or exploit the goodwill embodied in someone else's mark, then I don't care what the dates are, and neither will a UDRP panel.
However, if there are reasons to conclude that the domain registrant had no actual notice, or duty of constructive notice, relative to the claimed mark; and the claimed mark is not so inherently distinctive that the domain registration couldn't have been registered for some other reason, then one can use that set of dates, and the underlying commercial activity of the TM claimant, to demonstrate whether it was more likely or less likely that the domain registrant would have had any idea there was a TM claimant at the time the domain name was registered.
Technicalities matter... when they matter.
As for the "no comment" from Mr. Berryhill. I had a feeling that's how you would answer.
I had a feeling you had that feeling.
Let me add one single hypothetical fact to the situation, and then ask you whether he would "win or lose a UDRP dispute":
Let's say there is absolutely no reason why an Australian would, or even should, know of a pending US trademark registration application. And, indeed, an Australian has no duty to know of such a thing. Let's also say that the TM claimant's website was a piece of crap at the time the domain name was registered, and the TM claimant was the 10,000th Google search result for "screaming PC".
Okay, so far, so good.
NOW let's say that the wife of the TM claimant's president took a vacation in Australia and had a mad, passionate affair with the domain registrant and decided to leave her husband and stay in Australia. The TM claimant then flew to Australia, got into a nasty fistfight with the domain registrant, and they both suffered a few injuries and became permanent mutually-hated enemies of each other.
A week later, the domain name was registered.
Now, with that fact in mind, would you conclude the domain name was registered in good faith or not.
You can't always just focus on a set of dates in a trademark record, absent a world of other potential facts.