Case Overview

In a consequential split decision issued March 27, 2024, the U.S. Court of Appeals for the Federal Circuit delivered a nuanced ruling in *Lacerta Group, Inc. v. Inline Plastics Corp.* (Case No. 22-2295) — affirming in part, vacating in part, and remanding the district court’s judgment across multiple fronts. The case centered on five patents covering tamper-resistant and tamper-evident food container technology, a competitive product category with significant commercial stakes in food service and retail packaging markets.

The Federal Circuit’s mixed outcome — sustaining a noninfringement finding, overturning an invalidity judgment, and resetting the attorney fees question — offers critical lessons for patent holders asserting manufacturing method and product design patents, and for accused infringers navigating validity and damages exposure. For patent litigators, IP professionals, and R&D teams operating in the packaging technology sector, this case repays careful analysis.

The Parties

The Patents at Issue

Five U.S. patents were at the center of this tamper-evident container patent litigation. These patents collectively cover methods of manufacturing tamper-resistant containers, the container products themselves, and tamper-resistant containers incorporating tamper-evident features.

• • US7,073,680 B2 — Covering methods of manufacturing tamper-resistant containers
• • US7,118,003 B2 — Covering methods of manufacturing tamper-resistant containers
• • US8,795,580 B2 — Covering container products and tamper-resistant features
• • US9,630,756 B2 — Covering tamper-resistant containers with tamper-evident features
• • US9,527,640 B2 — Covering tamper-resistant containers with tamper-evident features

The Verdict & Legal Analysis

Outcome Summary

The Federal Circuit issued an AFFIRMED IN PART, VACATED IN PART, AND REMANDED decision — one of the more procedurally layered outcomes in recent packaging patent litigation. Key rulings included affirming the district court’s denial of Inline’s JMOL motion on validity and noninfringement findings on various claims, while vacating the district court’s judgment of invalidity, without-prejudice dismissal of Inline’s late-withdrawn claims, and denial of Lacerta’s § 285 attorney fees motion. Each party is to bear its own costs on appeal.

Verdict Cause Analysis

The Federal Circuit’s decision navigated competing trial outcomes at the district level. The court’s rejection of Inline’s JMOL arguments on validity signals that the trial record presented sufficient evidence to support a jury finding of validity — yet the court found the invalidity judgment itself procedurally or substantively flawed enough to warrant a new trial, rather than outright reversal in Lacerta’s favor.

The affirmance of noninfringement findings on “various claims” indicates that the claim construction applied at trial narrowed the asserted claims in ways that excluded Inline’s accused products from literal infringement. The Federal Circuit did not disturb those findings, suggesting well-grounded claim construction analysis at the district level on those specific claims. The vacatur of the invalidity judgment is strategically significant: rather than resolving validity definitively, the Federal Circuit returned the question for retrial, preserving Lacerta’s opportunity to sustain its patent rights. This bifurcated posture — affirming noninfringement while resetting invalidity — creates a legally unusual scenario where the patents may ultimately be found valid, yet the defendant’s products have already been found non-infringing on some claims.

Attorney Fees Implications

The vacatur of the § 285 attorney fees denial deserves particular attention. Under Octane Fitness v. ICON Health (2014), attorney fees in patent cases require a finding that the case is “exceptional.” By reopening this issue on remand, the Federal Circuit signaled that the district court’s fee analysis may need revisiting in light of the corrected invalidity and damages determinations — a meaningful development for both parties’ financial exposure.

Legal Significance

This decision reinforces that JMOL denials on validity are difficult to overturn on appeal when a trial record contains substantial evidence. It also illustrates the Federal Circuit’s willingness to disaggregate complex multi-issue verdicts, affirming some rulings while vacating others, rather than issuing wholesale reversals. For packaging technology patent litigation specifically, the case signals that layered patent portfolios covering both product and method claims require rigorous, claim-by-claim infringement analysis — and that trial defects on invalidity can survive appeal to get a second hearing.