Require the French lawsuit for etui (10)

I believe the answer is:

needlecase

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'etui' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'require the french lawsuit' is the wordplay.
'require' becomes 'need' (synonyms).
'the french' becomes 'le' ('the' in French).
'lawsuit' becomes 'case' (synonyms).
'need'+'le'+'case'='NEEDLECASE'

'for' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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