In June, Impact Fund filed an amicus brief on behalf of thirty-six other public interest law organizations in San Diego Tenant Union et al. v. San Diego Housing Commission et al., in the California Court of Appeal. Our brief asked the Court to affirm the availability of catalyst fees to plaintiffs' counsel in successful public interest lawsuits because nonprofit legal services organizations rely upon the fee-shifting provisions of catalyst fees to undertake important litigation. “Catalyst fees” are a legal mechanism by which defendants pay plaintiffs attorneys’ fees when plaintiffs’ lawsuit induces defendants to provide the relief sought by plaintiffs—in other words, when plaintiffs’ lawsuit “catalyzes” defendants’ change in conduct.