Federal Circuit Affirms Ruling in Khan v. Khan HeRo Graft Patent Dispute
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📋 Case Summary
| Case Name | Nazir Khan v. Iftikhar Khan |
| Case Number | 23-2329 (Fed. Cir.) |
| Court | Court of Appeals for the Federal Circuit |
| Duration | Aug 2023 – Jul 2024 10 months 21 days |
| Outcome | Defendant Win — Affirmance |
| Patents at Issue | |
| Accused Products | HeRo Graft (Hemodialysis Reliable Outflow graft) |
Case Overview
The Parties
⚖️ Plaintiff
Individual inventor and plaintiff in this patent infringement action, appearing pro se at the appellate level.
🛡️ Defendant
Defendant in the infringement action, represented by Workman Nydegger, a leading intellectual property law firm.
The Patent at Issue
This dispute centered on **US Patent No. 8,747,344 B2**, which covers technology related to vascular access grafts—specifically innovations relevant to hemodialysis access solutions. While the full claims are documented in the USPTO record, this patent protects functional aspects of the medical device.
- • US8747344B2 — Vascular access graft for hemodialysis patients
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The Verdict & Legal Analysis
Outcome
The Federal Circuit issued an unambiguous disposition: **AFFIRMED**. The court ordered and adjudged that the prior ruling stands, with the appeal ultimately dismissed. No specific damages figures were disclosed in the available case record, and no separate injunctive relief determinations were identified from the data provided.
Key Legal Issues
The Federal Circuit’s review focused on whether the lower court committed reversible legal error regarding claim construction, infringement findings, or validity determinations. The affirmance indicates that the appellate panel found no such error. The pro se representation of Nazir Khan is a procedurally significant detail, highlighting the substantial disadvantages faced by unrepresented litigants at the appellate level, especially against experienced IP counsel like Workman Nydegger.
Freedom to Operate (FTO) Analysis
This case highlights critical IP risks in medical device development. Choose your next step:
📋 Understand This Case’s Impact
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High Risk Area
Vascular access grafts for hemodialysis
Relevant Patents
In medical device space
Design-Around Options
Available for most claims
✅ Key Takeaways
Federal Circuit affirmances in infringement actions confirm the high standard required to overturn lower-court findings on appeal.
Search related case law →Pro se representation in complex patent appeals significantly disadvantages plaintiffs, emphasizing the need for specialized IP counsel.
Explore appellate strategies →Frequently Asked Questions
The case involved **US Patent No. 8,747,344 B2** (Application No. US13/645,862), a patent covering technology related to the HeRo vascular access graft used in hemodialysis.
The Court of Appeals for the Federal Circuit **affirmed** the prior infringement ruling and dismissed the appeal on July 16, 2024, after a 326-day proceeding.
The outcome reinforces that appellate reversal of infringement findings requires demonstrating clear legal error — a high bar. It also highlights the litigation risk posed by individual inventor patents to commercially deployed medical devices.
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References
- United States Court of Appeals for the Federal Circuit — Case No. 23-2329
- US Patent No. 8,747,344 B2 on Google Patents
- U.S. Patent and Trademark Office
- Workman Nydegger – Intellectual Property Law
- PatSnap — IP Intelligence Solutions for Law Firms
This article is for informational purposes only and does not constitute legal advice. All case information is drawn from publicly available court records. For platform capabilities, visit PatSnap.