Rex Medical v. Intuitive Surgical: Federal Circuit Affirms in Surgical Stapler Dispute
Rex Medical, LP challenged Intuitive Surgical’s SureForm 45 and SureForm 60 stapler lines under two surgical stapler patents. The Federal Circuit affirmed the lower court’s ruling in Intuitive Surgical’s favour after 709 days of appellate proceedings, leaving Rex Medical’s infringement claims unresolved in their favour.
Federal Circuit closes door on Rex Medical’s surgical stapler claims
Rex Medical, LP filed this appeal at the U.S. Court of Appeals for the Federal Circuit on 24 October 2023, asserting infringement of US10136892B2 and US9439650B2 — two patents covering surgical stapler technology — against Intuitive Surgical, Inc., Intuitive Surgical Operations, Inc., and Intuitive Surgical Holdings, LLC. The accused products were Intuitive Surgical’s SureForm 45 Curved Tip stapler, SureForm 45 stapler, SureForm 60 stapler, and associated reloads, core components of Intuitive’s robotic-assisted surgical platform.
The Federal Circuit issued its affirmance on 2 October 2025, closing the case after 709 days. An affirmance at the Federal Circuit means the court found no reversible legal error in the lower court’s analysis — the decision below stands in its entirety. For Intuitive Surgical, this result preserves the freedom to continue commercialising the SureForm stapler line without the cloud of these specific patent claims. For Rex Medical, all appellate avenues at this level are exhausted.
A 709-day appellate duration suggests the case involved substantive merits briefing rather than a summary procedural resolution, though the public record does not detail the specific grounds of appeal or the precise claim construction disputes at issue. The affirmance is consistent with Federal Circuit deference to factual findings made below, particularly on claim construction and infringement analysis. What drove the underlying district-level outcome — whether invalidity, non-infringement, or both — remains unspecified in the appellate record as published.
Filing to Appeal Dismissed in 709 days
709 days — longer than the median Federal Circuit appeal, which typically resolves in under 18 months
Federal Circuit affirms: what the ruling means for both parties
What ‘AFFIRMED’ means at the Federal Circuit
An affirmance by the Federal Circuit signals that the court reviewed the record and found no reversible error in the lower court’s decision. The Federal Circuit applies a deferential standard to factual findings — including infringement determinations — while reviewing claim construction de novo. Here, the affirmance means the lower court’s analysis on all challenged grounds was upheld. Rex Medical’s arguments on appeal did not persuade the court that any legal or factual error warranted reversal or remand.
No reversible error foundRex Medical’s patents survive but deliver no enforcement win
US10136892B2 and US9439650B2 remain issued and enforceable on their face — the affirmance does not invalidate them. However, Rex Medical obtained no infringement finding against the SureForm product line through this litigation. The practical enforceability of these patents against Intuitive Surgical’s products is now significantly constrained by the lower court findings, which the Federal Circuit has endorsed. Future assertion against the same accused products would face strong preclusion arguments.
Patents intact; no infringement winIntuitive Surgical’s SureForm line cleared at highest patent appeals level
For Intuitive Surgical and its affiliates, the Federal Circuit affirmance is a commercially significant result: the SureForm 45, SureForm 45 Curved Tip, SureForm 60, and associated reloads have now been tested against Rex Medical’s two surgical stapler patents at both trial and appellate levels. Rex Medical’s further appellate options are limited — a petition for en banc rehearing or certiorari to the Supreme Court would face high procedural bars. The commercial pathway for the SureForm line under these specific patent claims is clear.
Full appellate clearance achievedRobotic surgical stapler IP landscape: affirmance raises the bar
This Federal Circuit affirmance strengthens Intuitive Surgical’s IP posture in robotic-assisted stapling — a high-value segment of the surgical robotics market. For competitors and new entrants developing articulating or curved-tip surgical staplers, the result suggests these particular claim constructions were interpreted in a manner that did not capture the SureForm design. That interpretation, now affirmed, will inform future FTO analyses. Parties holding similar stapler patents should assess whether their claim language distinguishes the Rex Medical patents’ now-tested scope.
Robotic stapler FTO landscape clarifiedFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Rex Medical, LP | Company | Medical device IP licensor — holder of US10136892B2 and US9439650B2, surgical stapler patentsSearch in Eureka ↗ |
| Defendant | Intuitive Surgical, Inc. | Company | Intuitive Surgical, Inc. — developer of robotic-assisted surgical systems including the SureForm stapler product lineSearch in Eureka ↗ |
| Co-Defendant | Intuitive Surgical Operations, Inc. | Company | Search in Eureka ↗ |
| Co-Defendant | Intuitive Surgical Holdings, LLC | Company | Search in Eureka ↗ |
| Plaintiff counsel | Baldassare Vinti | Attorney | Counsel for Rex Medical, LPSearch in Eureka ↗ |
| Plaintiff counsel | Elizabeth Shrieves | Attorney | Counsel for Rex Medical, LPSearch in Eureka ↗ |
| Plaintiff counsel | Erik Milch | Attorney | Counsel for Rex Medical, LPSearch in Eureka ↗ |
| Plaintiff counsel | John E. Roberts | Attorney | Counsel for Rex Medical, LPSearch in Eureka ↗ |
| Plaintiff counsel | Joseph Drayton | Attorney | Counsel for Rex Medical, LPSearch in Eureka ↗ |
| Plaintiff counsel | Lucas Kowalczyk | Attorney | Counsel for Rex Medical, LPSearch in Eureka ↗ |
| Plaintiff law firm | Proskauer Rose LLP | Law Firm | Representing Rex Medical, LPSearch in Eureka ↗ |
| Defendant counsel | Claire A. Fundakowski | Attorney | Counsel for Intuitive Surgical, Inc.Search in Eureka ↗ |
| Defendant counsel | E. Joshua Rosenkranz | Attorney | Counsel for Intuitive Surgical, Inc.Search in Eureka ↗ |
| Defendant counsel | George C. Lombardi | Attorney | Counsel for Intuitive Surgical, Inc.Search in Eureka ↗ |
| Defendant counsel | Lauren Weber | Attorney | Counsel for Intuitive Surgical, Inc.Search in Eureka ↗ |
| Defendant counsel | Melanie L. Bostwick | Attorney | Counsel for Intuitive Surgical, Inc.Search in Eureka ↗ |
| Defendant counsel | Michael Rueckheim | Attorney | Counsel for Intuitive Surgical, Inc.Search in Eureka ↗ |
| Defendant counsel | Samantha Michelle Leff | Attorney | Counsel for Intuitive Surgical, Inc.Search in Eureka ↗ |
| Defendant law firm | Orrick, Herrington & Sutcliffe LLP | Law Firm | Representing Intuitive Surgical, Inc.Search in Eureka ↗ |
| Defendant law firm | Winston Strawn LLP | Law Firm | Representing Intuitive Surgical, Inc.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Court of Appeals for the Federal CircuitSearch in Eureka ↗ |
Official order — verbatim text
The Federal Circuit’s order — ‘THIS CAUSE having been considered, it is ORDERED AND ADJUDGED: AFFIRMED’ — is a final merits disposition endorsing the lower court’s outcome in full. The court’s use of standard affirmance language without qualification indicates no partial reversal or remand on any discrete issue. Under the Federal Circuit’s deferential review standard, factual infringement findings are upheld unless clearly erroneous, while claim construction is reviewed de novo. The unqualified affirmance suggests Rex Medical’s appeal did not successfully challenge either the factual or legal underpinnings of the decision below.
US10136892B2 & US9439650B2 — Surgical Stapler Mechanism Patents
US10136892B2 and US9439650B2 are both directed to surgical stapler technology — specifically mechanical stapling devices used in minimally invasive and robotic-assisted surgery. The patents were asserted against Intuitive Surgical’s SureForm product family, which includes articulating and curved-tip stapler formats. The ‘892 patent derives from application US15/617835 and the ‘650 patent from US15/018000, placing both in a period of rapid innovation in robotic-assisted surgical instruments. These patents sit within a technically dense area where claim construction nuances — particularly relating to staple cartridge geometry, firing mechanisms, and articulation — are heavily contested.
Surgical stapler patents have become a significant battleground as robotic surgical platforms expand into general surgery, thoracic, and colorectal procedures. Intuitive Surgical’s SureForm line represents a meaningful commercial stake in this space. The Federal Circuit’s affirmance — without identified error in the lower court’s analysis — suggests the asserted claims were construed in a manner that did not read on the SureForm design. For competitors developing articulating staplers or curved-tip reload systems, this case is a reference point for how broadly these Rex Medical claims will be interpreted in future disputes.
Should you run an FTO against US10136892B2 and US9439650B2?
Any company developing, manufacturing, or commercialising surgical stapling devices — particularly articulating or curved-tip formats designed for robotic or laparoscopic platforms — should assess exposure under these two Rex Medical patents. Although Intuitive Surgical prevailed in this litigation, the patents remain in force. The claim constructions applied here may not govern how the patents are asserted against different product architectures. R&D teams designing new stapler mechanisms or reload configurations should treat these patents as live risk factors until expiry.
PatSnap Eureka’s FTO Search Agent can map the full claim scope of US10136892B2 and US9439650B2 against your product specifications, identify prosecution history estoppel that may limit their reach, and surface the closest prior art landscape. For surgical device teams, Eureka can also monitor for continuation applications or related family members that extend protection into adjacent stapler configurations — providing early warning before a product enters clinical or commercial development.
Run a freedom-to-operate analysis on US10136892B2 to assess your product’s exposure
Run FTO in Eureka →Similar Federal Circuit surgical stapler and robotic surgery patent appeals
Explore Federal Circuit patent infringement appeals involving surgical stapler mechanisms, robotic-assisted surgical devices, and minimally invasive instrument patents analogous to this Rex Medical dispute.
What this case signals for the surgical robotics IP landscape
The Federal Circuit’s affirmance has direct implications for patent enforcement strategy and product clearance in robotic-assisted surgical stapling.
SureForm product line now carries Federal Circuit-level clearance
Intuitive Surgical’s SureForm 45 and SureForm 60 stapler families have been tested against both asserted patents at the appellate level. Any competitor, acquirer, or partner conducting due diligence on these products can treat this affirmance as strong — though not absolute — evidence of non-infringement under the construed claims.
Rex Medical’s patent portfolio warrants re-evaluation post-affirmance
US10136892B2 and US9439650B2 remain in force but their commercial leverage against Intuitive’s SureForm platform is now materially reduced. Portfolio holders with similar surgical stapler claims should review how the Federal Circuit’s endorsement of the lower court’s claim construction affects their own enforcement positions and licensing strategies.
Rex v Intuitive — key questions answered
The Federal Circuit affirmed the lower court’s ruling in favour of Intuitive Surgical on 2 October 2025. Rex Medical had appealed asserting infringement of US10136892B2 and US9439650B2 against the SureForm 45, SureForm 45 Curved Tip, SureForm 60 staplers, and associated reloads. The affirmance means the lower court’s decision — including all claim construction and infringement findings — was upheld with no reversible error identified.
Rex Medical asserted two patents: US10136892B2 (application US15/617835) and US9439650B2 (application US15/018000). Both patents cover surgical stapler technology. They were asserted against Intuitive Surgical’s SureForm 45 Curved Tip stapler, SureForm 45 stapler, SureForm 60 stapler, and associated reload components used in robotic-assisted surgical procedures.
The affirmance provides Intuitive Surgical with Federal Circuit-level validation that the SureForm stapler family does not infringe the asserted Rex Medical claims as construed by the lower court. This significantly reduces — though does not entirely eliminate — future infringement risk from these specific patents against the same products. Issue preclusion may further limit Rex Medical’s ability to re-litigate the same claims against identical accused products.
An affirmance in an infringement action does not necessarily adjudicate patent validity — it confirms the lower court’s infringement (or non-infringement) determination. Both patents remain issued. However, if invalidity was argued below and upheld, the affirmance endorses that finding too. The public appellate record for case 24-1072 does not specify which precise grounds were affirmed, so practitioners should review the underlying district court record for any validity rulings.
After a Federal Circuit affirmance, Rex Medical’s remaining options are limited. It could petition for rehearing en banc before the full Federal Circuit, though such petitions are rarely granted. Alternatively, Rex Medical could petition the U.S. Supreme Court for certiorari, which faces an even higher bar. Absent new grounds — such as a continuation patent with different claim scope — further pursuit of infringement claims against the same SureForm products faces strong preclusion arguments.
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