You can, of course, use that word outside the constraints of the registration. (Phew!)
The powers that be should have struck down any such claim, even within the category of Class 042 Scientific and technological services and research and design relating thereto; industrial analysis and industrial research services; design and development of computer hardware and software…
That they failed to do so says more about their understanding, than the principles involved.
This does, daily, matter to hundreds, prolly thousands and possibly vastly more people - at least artists graphic, literary or what have you - never mind the man in the street!
It's prolly apocryphal, and there's a court-house legend that when a well-known cola manufacturer tried to trademark a colour, the judge noted how much the brand had spent on the case, then said the restriction would be fine… while any argument stayed within a single Angstrom unit of the specification…
That cannot directly apply here, yet please consider the principle.
That the powers whose job is to protect you, me and Jo Public failed so to do and instead ruled in favour of a postulant with no possible justification but greed, says what?
Does it say the suitor was right?
Does it say the Court was right?
Does it say common sense was right?
What justification could there be for any of that, except a previous Court ruling? Who thinks previous rulings are sacrosanct; above challenge?
Logic and decency leave it open to anyone to challenge that failure, the qualifying factor being cash, and a great deal of it.
Lacking that cash, you're still allowed to use the word anywhere outside the categories specified.
Should you use the word even within the proscribed categories, you might expect to get at least one and prolly more letters of complaint from the "owner"'s lawyers… which letters will cost the "owner" more than it should, at least.
If I had the cash, I'd challenge that ruling on the primary-school ground that dictionary words can't be copyrighted.
Even with no cash, I'd push it until the claimant's lawyers made it indubitable, their next step really would be to go to Court.
By that stage, this nonsense would have cost the claimant several hundreds of the local currency.
Hooray!