"as invalid" is a grammatically correct and usable phrase in written English.
You can use it to indicate something is not valid. For example, "The court ruled his claim as invalid."
Moyes in, by the way - my opinion is as invalid as anyone else's".
Legally the act of 1660 was as invalid as the ejection of 1653, because it lacked royal assent.
Hence the 1996-2000 dividends were as invalid as the Cryovac sale and should be refunded.
"We were identifying plenty of paperwork which some might view as invalid".
Their ballots were discarded as invalid.
Chief Williamson dismissed as invalid any comparisons with Ferguson, whose police department is similarly unrepresentative.
A study has found, however, that twice as many ballots were rejected as invalid in 2008 as in 2004.
For these reasons, circuit judges tended to dismiss patents as invalid simply to get rid of the cases.
Ms. Byam's 7 in math is as invalid a value-added score as such things can get.
But you can bet they won't be marketed as "invalid cars," as some classic microcars are known.
However, Denis Pushilin, head of the separatists' self-declared Supreme Council, has dismissed the presidential elections as invalid.
