Advokatene Sigmond & Ysen is a law firm established in 2007 by the sisters Aase and Kirsten Sigmond, together with lawyer Heidi Ysen. The firm specializes in criminal cases, where they act both as defenders and assistance lawyers. They also offer assistance in imprisonment cases, sentencing matters and compensation for unjustified criminal prosecution. In addition, they handle child protection cases and expropriation.
The lawyers Sigmond & Ysen are regular defenders in the Oslo District Court and Borgarting Court of Appeal, which gives them extensive experience within the legal system. The firm also has a branch office in Skien, which extends their reach and availability to clients in various cases.