IBM v. Ebates & Zillow: Federal Circuit Affirms US7631346 Unpatentable
IBM’s appeal to the Federal Circuit over US7631346B2 — covering runtime account creation within federated single-sign-on systems — ended in affirmance after 749 days. The ruling confirms the lower invalidity finding against Ebates Performance Marketing and Zillow Group, extinguishing IBM’s enforcement avenue on this patent.
IBM’s federated SSO patent killed at the Federal Circuit
International Business Machines Corp. filed appeal No. 24-1170 at the Court of Appeals for the Federal Circuit on 21 November 2023, challenging a lower tribunal’s finding that US7631346B2 — entitled ‘Method and system for a runtime user account creation operation within a single-sign-on process in a federated computing environment’ — was unpatentable. The defendants, Ebates Performance Marketing Inc. and Zillow Group Inc. (along with Zillow Inc.), successfully defended the invalidity ruling below and opposed IBM’s appeal.
On 9 December 2025, the Federal Circuit issued a final order affirming the lower decision. An affirmance at this level means the appellate panel found no reversible legal or factual error in the underlying unpatentability determination. The claims of US7631346B2 remain cancelled or invalid as adjudicated below, and IBM cannot rely on this patent for further enforcement against Ebates or Zillow on the basis of those same claims.
The 749-day duration of the appeal is consistent with contested Federal Circuit patent appeals involving technical claim construction and patentability arguments. The public record does not disclose the specific prior art or statutory basis — such as 35 U.S.C. § 101 or § 103 — underlying the unpatentability finding, nor whether IBM sought en banc rehearing. What is clear is that IBM’s effort to preserve this federated identity patent ultimately failed at the highest available appellate level short of the Supreme Court.
Filing to Unpatentable in 749 days
749 days from filing to close — above typical Federal Circuit appeal resolution timelines
Federal Circuit affirms: what the unpatentability ruling means for both parties
Affirmance means no reversible error was found below
When the Federal Circuit affirms, it is confirming that the lower tribunal’s decision was legally and factually sound — or at minimum that any error was not reversible. The court does not retry the case; it reviews for errors in law or clearly erroneous fact-finding. An affirmance of an unpatentability ruling means the claims of US7631346B2 are conclusively invalid as between these parties, with no further appellate recourse below the Supreme Court.
Affirmance — lower decision standsIBM loses enforcement rights on this federated SSO patent
For IBM, the affirmance extinguishes any enforcement position built on US7631346B2 against Ebates and Zillow. Depending on the proceeding below — whether IPR, PGR, or district court — the claims may be cancelled with broader estoppel effects. IBM cannot re-assert invalidated claims, and the commercial value of this specific patent for licensing or litigation purposes is effectively eliminated by the ruling.
Patent claim value eliminatedEbates and Zillow secure full vindication on appeal
Ebates Performance Marketing and the Zillow entities successfully defended the unpatentability finding at the Federal Circuit level. This outcome closes the appellate loop — IBM has no further avenue to revive these claims in the ordinary course. The defendants can now operate their respective platforms without risk of infringement liability under US7631346B2, and the affirmance raises the bar for any future related patent assertion by IBM in this technical space.
Defendants fully protectedFederated identity patents face heightened scrutiny post-affirmance
This outcome signals that federated SSO and identity management patents — particularly those with broad method claims over runtime account provisioning — remain vulnerable to invalidity challenge. Companies operating identity federation, SSO infrastructure, or user account orchestration systems should note that even IBM-grade prosecution history did not survive appellate review. The ruling may embolden defendants in related proceedings to pursue similar invalidity arguments against comparable claims.
SSO patent risk landscape elevatedFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | International Business Machines, Corp. | Company | Global technology company — holder of US7631346B2 covering federated SSO account creationSearch in Eureka ↗ |
| Defendant | Ebates Performance Marketing, Inc. | Company | Ebates Performance Marketing Inc., Zillow Group Inc., and Zillow Inc. — online commerce and real estate platformsSearch in Eureka ↗ |
| Co-Defendant | Zillow Group, Inc. | Company | Search in Eureka ↗ |
| Co-Defendant | Zillow, Inc. | Company | Search in Eureka ↗ |
| Plaintiff counsel | Adam Steinmetz | Attorney | Counsel for International Business Machines, Corp.Search in Eureka ↗ |
| Plaintiff counsel | Karim Zeddam Oussayef | Attorney | Counsel for International Business Machines, Corp.Search in Eureka ↗ |
| Plaintiff counsel | Taeg Sang Cho | Attorney | Counsel for International Business Machines, Corp.Search in Eureka ↗ |
| Plaintiff counsel | YungHoon Ha | Attorney | Counsel for International Business Machines, Corp.Search in Eureka ↗ |
| Plaintiff law firm | Desmarais LLP | Law Firm | Representing International Business Machines, Corp.Search in Eureka ↗ |
| Defendant counsel | Heath Briggs | Attorney | Counsel for Ebates Performance Marketing, Inc.Search in Eureka ↗ |
| Defendant law firm | Greenberg Traurig LLP | Law Firm | Representing Ebates Performance Marketing, 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 — ‘AFFIRMED’ with basis of termination recorded as ‘Unpatentable’ — confirms that the appellate panel found no reversible error in the lower tribunal’s patentability determination on US7631346B2. At the Federal Circuit, affirmance of an unpatentability finding typically reflects deference to factual determinations on prior art and a de novo review of any claim construction or legal conclusions. The terse affirmance language suggests the panel found the record below sufficient without requiring remand or further proceedings, leaving IBM with no remaining appellate path at this court level.
US7631346B2 — Federated SSO runtime user account creation
US7631346B2, filed under application number US11/097587, claims methods and systems for creating user accounts on-the-fly during a single-sign-on authentication sequence in a federated computing environment. The invention addresses the scenario where a user authenticated by a home identity provider attempts to access a partner service provider that has no pre-existing account for that user — the patent covers the runtime provisioning logic that bridges this gap. Federated identity was an emerging enterprise architecture concern when this application was prosecuted, making the patent strategically significant for IBM’s software and services portfolio.
For the broader technology sector, US7631346B2 represents a category of identity-layer patents that IBM has historically used to assert against platform operators and e-commerce companies relying on third-party or federated login infrastructure. The Federal Circuit’s affirmance of unpatentability removes this specific weapon from IBM’s arsenal but leaves open questions about the viability of continuation or related patents in the same family. Any company operating federated SSO, OAuth-based identity delegation, or enterprise identity broker services should treat this case as a marker — not a clearance — given the possibility of related enforceable IBM claims in adjacent application clusters.
Should you run an FTO analysis against US7631346B2 and related IBM SSO patents?
If your platform integrates federated authentication, single-sign-on delegation, or runtime account provisioning through an identity broker — as is common in e-commerce, real estate tech, SaaS, and enterprise software — the IBM SSO patent family warrants attention. While US7631346B2 has been found unpatentable, IBM’s patent estate in federated identity is broad. R&D and product teams building or acquiring identity federation capabilities should not treat this affirmance as a blanket clearance without checking for related continuation or divisional patents covering the same workflow.
PatSnap Eureka’s FTO Search Agent can rapidly map the full IBM federated identity patent cluster around US7631346B2 — identifying continuation applications, related family members, and claim scope overlaps with your specific product implementation. Eureka surfaces prosecution history, prior art that survived or failed at the USPTO, and comparable invalidated claims to help your legal team triage genuine exposure from extinguished risk. Run your FTO query now to identify which IBM SSO-adjacent patents remain live enforcement risks for your identity architecture.
Run a freedom-to-operate analysis on US7631346B2 to assess your product’s exposure
Run FTO in Eureka →Similar Federal Circuit appeals: federated identity and SSO patent validity
Cases involving Federal Circuit review of SSO, federated authentication, and identity management patent validity challenges — relevant comparators for US7631346B2 appeal analysis.
What this case signals for the federated identity IP landscape
IBM’s failed appeal sets a visible precedent for how courts evaluate SSO and federated identity patents under invalidity challenge.
Federated SSO patents are under sustained invalidity pressure
The affirmance of unpatentability on US7631346B2 is consistent with a broader Federal Circuit trend of scrutinising method claims in identity and authentication technology. Companies holding or asserting similar SSO-layer patents should audit claim scope for § 101 and § 103 exposure before filing or defending litigation.
Defendants in IBM patent cases can win at the Federal Circuit
Ebates and Zillow’s successful defence demonstrates that even against a deep-pocketed patentee with extensive prosecution resources, well-constructed invalidity arguments can survive appeal. This outcome may influence settlement calculus in pending IBM assertion campaigns targeting platform companies with federated login dependencies.
International v Ebates — key questions answered
The Federal Circuit affirmed the lower tribunal’s finding that US7631346B2 was unpatentable. The order, issued 9 December 2025, closes IBM’s appellate challenge against Ebates Performance Marketing and the Zillow entities, confirming the invalidity determination stands without reversible error.
US7631346B2 claims a method and system for creating user accounts at runtime during a single-sign-on process in a federated computing environment. IBM asserted this patent against Ebates and Zillow, which operate platforms with federated or delegated authentication dependencies. The patent was challenged on patentability grounds and ultimately found unpatentable, a finding the Federal Circuit affirmed.
An affirmance by the Federal Circuit means the appellate panel found no reversible error — legal or factual — in the lower tribunal’s decision. The lower ruling stands in full. For patentability challenges, an affirmed unpatentability finding means the challenged patent claims remain invalid and the patentee has no further recourse at that appellate level short of petitioning the Supreme Court.
The direct legal effect binds IBM, Ebates, and Zillow. However, if the underlying proceeding was an IPR, the unpatentability finding may have broader estoppel implications. More broadly, the ruling is a public signal that US7631346B2’s claims are invalid, which strengthens the position of third parties who might face similar IBM assertions based on the same patent — though independent FTO analysis remains advisable given IBM’s wider SSO patent portfolio.
The appeal ran 749 days from filing on 21 November 2023 to closure on 9 December 2025. This duration is on the longer side for a Federal Circuit patent appeal, where median resolution can range from roughly 12 to 24 months. The extended timeline may suggest substantive briefing complexity, oral argument scheduling, or panel deliberation on nuanced patentability questions, though the public record does not confirm the specific cause of the duration.
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