the querry being "poursuites frappées d'opposition"
All results are related to Switzerland => the term is specific to Switzerland.
From the
real-life samples:
poursuite = claim / request to pay debts
"frappées d'opposition" = the party that was sued refused to pay on the grounds that the claims for payment of debts are groundless / without any substance - if you want to know the fine points of this procedure (like what is needed for this "opposition" to be accepted by the courts) look at the relevant legislation in Switzerland - it's all publicly available.
in plain-speak, the gist of:
Après des poursuites frappées d'opposition, A. a ouvert action contre B
=
after making several claims for recovery of (supposed) debts that were rejected as unfounded, ....
https://www.ge.ch/poursuites/demander-non-divulgation-poursu...https://www.bonasavoir.ch/916543-radiation-payantehttp://www.polyreg.ch/bgeunpub/Jahr_2011/Entscheide_5A_2011/...https://jus.swissbib.ch/Record/481232982/Detailsdict.leo.org/allemand-français/d'opposition
https://www.cbwm.ch/avocats/peter-schaufelberger/?lang=enhttps://docs.lexsear.ch/ch/rul/101-II-69etc ...