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A Rose and a Thorn: Federal Circuit Permits Contractor to Add New Claim to Pending Complaint, but Enforces Notice Provision to Bar Recovery

Client Alert | 1 min read | 02.26.15

In K-Con Building Systems Inc. v. United States, the Federal Circuit held that a contractor could amend its COFC complaint to add new, denied claims related to the appeal if the new claims either requested different remedies (e.g., additional compensation, remission of funds, non-monetary relief) or asserted legal grounds for relief that were materially different from the claims under appeal. This holding may prove helpful to contractors at the COFC who identify additional bases for recovery/remedies after filing their complaint; however, the Court also denied recovery because the contractor's two-year delay before notifying the government of the alleged "changes" failed to provide the adequate notice required by the Changes Clause, distinguishing the facts in K-Con from those in prior cases where notice provisions were not strictly enforced.

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Client Alert | 3 min read | 07.13.26

Amici Rally Behind Liberty Global, Urging Tenth Circuit to Rein in Economic Substance Doctrine

Following the 10th Circuit's April 21, 2026, decision affirming the disallowance of Liberty Global’s $2.4 billion deduction under the codified economic substance doctrine, I.R.C. § 7701(o), Liberty Global filed a petition for panel rehearing or rehearing en banc on June 5, 2026. That petition has since drawn significant amicus support from various industry groups representing large taxpayers, as discussed below....