Claiming right to shelter amid trouble with government (9)

'claiming right' is the definition.
(a patent is a right to an idea or invention)

'shelter amid trouble with government' is the wordplay.
'shelter' becomes 'tent' (canvas shelter).
'amid' indicates putting letters inside.
'trouble' becomes 'pain' (synonyms).
'with' is a charade indicator (letters next to each other).
'government' becomes 'g' (abbreviation for government).
'tent' going within 'pain' is 'patentin'.
'patentin'+'g'='PATENTING'

'to' is the link.