Here's an excerpt from the legislation pertaining to skills assessment at time of invite....
At the time of invitation to apply for the visa:
(a) the relevant assessing authority had assessed the applicant’s skills as suitable for the applicant’s nominated skilled occupation; and
(b) the assessment was not for a Subclass 485 (Temporary Graduate) visa; and
(c) if the assessment specified a period during which the assessment was valid, and the period did not end more than 3 years after the date of the assessment — the period had not ended; and
(d) if paragraph (c) did not apply — not more than 3 years had passed since the date of the assessment.
