Non, pas de faute de frappe. "kraft" va avec le génitif en allemand. Je ne connais pas les termes appropriées en francais, mais cela veut dire que, sorry, I will continue in English, c'est plus facile pour moi:

kraft Gesetzes: by law

auf sie übergegangene Regressansprüche: sie refers to die Anstragstellerin and she thinks that she is entitled to claim (Ansprüche) redress (recours en francais, Regress en allemand)

Now, what is important, is that the lawyer writing this, says that her entitlement to redress is not real, but "vermeintlich" - asserted in English, in French maybe allégué.

auf sie übergegangene: the whole expression is "kraft Gesetzes auf sie übergegangen" this means simply that she is entitled to claim redress by law and this entitlement has been transferred to her. I suppose because previously somebody else was entitled and maybe either they died, in the case of a private person, or in the case of a company, the company was sold and now the new owner wants to make claims.

Hope that helps.