Boehringer Ingelheim v. Sun Pharma: 11-Patent Empagliflozin Consent Judgment After 2,456 Days
Boehringer Ingelheim brought ANDA infringement claims against Sun Pharmaceutical over generic versions of Jardiance, Glyxambi, Synjardy, and Trijardy XR, asserting 11 patents spanning empagliflozin chemistry and combination formulations. After 2,456 days of consolidated multi-case litigation, the parties resolved all disputes through a consent judgment entered July 30, 2025, with Sun enjoined from launching until patent expiry.
A decade-long empagliflozin fortress: how Boehringer locked out Sun Pharma
Filed in November 2018 in the District of Delaware, this action arose from Sun Pharmaceutical’s ANDA filings seeking approval to market generic versions of Boehringer Ingelheim’s blockbuster SGLT2 inhibitor franchise — Jardiance (empagliflozin), Glyxambi (empagliflozin/linagliptin), Synjardy (empagliflozin/metformin), and Trijardy XR (empagliflozin/linagliptin/metformin). Boehringer asserted 11 patents covering the core compound, pharmaceutical compositions, and combination therapies, spanning application dates from multiple filing windows.
The litigation expanded significantly over time, with multiple related Delaware civil actions consolidated under the lead docket. Resolution came on July 30, 2025 via a stipulated consent judgment: Sun conceded that all 11 patents are valid, enforceable, and infringed by its ANDA products, and accepted an injunction prohibiting commercialisation in the United States until expiry of each patent, including any term extensions or pediatric exclusivity. All complaints were dismissed without prejudice and without costs to either side — a structure consistent with a negotiated market-entry settlement rather than a fully contested adjudication.
At 2,456 days, the timeline reflects the complexity of multi-wave ANDA litigation involving stacked formulation and combination patents. The consent judgment’s carve-out — preserving Sun’s right to challenge the 11 patents in connection with products outside these specific ANDAs — suggests the parties negotiated a narrow but commercially decisive resolution. The financial terms of any underlying licence or authorised-generic arrangement, if any exist, remain undisclosed in the public record.
Filing to Consent Judgment in 2456 days
6.7 years — well above median ANDA pharma litigation duration in Delaware
Consent judgment entered: what Sun’s concession means for both parties
Consent judgment: Sun stipulates validity and infringement
A consent judgment is a court-ordered resolution jointly agreed by the parties, carrying the same legal force as a litigated judgment. Here, Sun stipulated that all 11 Boehringer patents are valid, enforceable, and infringed by its ANDA products. This is a stronger concession than a simple dismissal — it creates an enforceable court record that Sun cannot launch these generics without breaching the injunction, binding Sun’s successors and assigns.
Stipulated — court-ordered injunctionBoehringer secures injunction through all patent expiries
Boehringer obtains a court-enforced exclusion order preventing Sun from making, selling, or importing the ANDA products until the last of the 11 patents expires, including any pediatric exclusivity. The consent judgment also allows Boehringer to return to court if additional regulatory exclusivities arise. Critically, all claims were dismissed without prejudice, preserving Boehringer’s ability to re-litigate if Sun breaches the terms or files new ANDAs outside the agreed scope.
Patent term protection securedSun’s US market entry blocked — but patent challenge rights preserved
Sun is enjoined from commercialising its empagliflozin generic portfolio in the US for the duration of the patent term. However, the consent judgment explicitly preserves Sun’s right to challenge the 11 patents in connection with any product outside these five ANDAs — a meaningful carve-out that signals the parties drew a deliberate boundary. The structure, with no costs awarded, suggests a negotiated commercial resolution rather than a capitulation after adverse litigation findings.
Enjoined; future challenge rights retainedEmpagliflozin exclusivity reinforced across the full product line
The consent judgment covers five ANDAs spanning Jardiance, Glyxambi, Synjardy, Synjardy XR, and Trijardy XR — Boehringer’s entire empagliflozin franchise. With 11 patents confirmed valid and infringed, the market exclusivity wall is substantially reinforced. Other generic filers challenging this portfolio face a dense, court-validated patent landscape. The SGLT2 inhibitor market, valued in the billions annually, remains protected at originator pricing for the foreseeable patent term.
SGLT2 exclusivity wall intactFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Boehringer-Ingelheim | Individual | Global pharmaceutical innovator — holder of empagliflozin (Jardiance) patent portfolioSearch in Eureka ↗ |
| Co-Plaintiff | Boehringer Ingelheim Corporation | Company | Search in Eureka ↗ |
| Co-Plaintiff | Boehringer Ingelheim International, GMBH | Company | Search in Eureka ↗ |
| Defendant | Sun Pharmaceutical Industries, Inc. | Company | Generic pharmaceutical manufacturer filing ANDAs for empagliflozin combination productsSearch in Eureka ↗ |
| Co-Defendant | Sun Pharmaceutical Industries, Inc. | Company | Search in Eureka ↗ |
| Co-Defendant | Ohm Laboratories, Inc. | Company | Search in Eureka ↗ |
| Plaintiff counsel | Brian P. Egan | Attorney | Counsel for Boehringer-IngelheimSearch in Eureka ↗ |
| Plaintiff counsel | Jack B. Blumenfeld | Attorney | Counsel for Boehringer-IngelheimSearch in Eureka ↗ |
| Plaintiff law firm | Morris, Nichols, Arsht & Tunnell LLP | Law Firm | Representing Boehringer-IngelheimSearch in Eureka ↗ |
| Defendant counsel | Bryce A. Cooper | Attorney | Counsel for Sun Pharmaceutical Industries, Inc.Search in Eureka ↗ |
| Defendant counsel | David A. Bilson | Attorney | Counsel for Sun Pharmaceutical Industries, Inc.Search in Eureka ↗ |
| Defendant counsel | John C. Phillips , Jr. | Attorney | Counsel for Sun Pharmaceutical Industries, Inc.Search in Eureka ↗ |
| Defendant counsel | Jovial Wong | Attorney | Counsel for Sun Pharmaceutical Industries, Inc.Search in Eureka ↗ |
| Defendant law firm | Phillips, McLaughlin & Hall PA | Law Firm | Representing Sun Pharmaceutical Industries, Inc.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Delaware District CourtSearch in Eureka ↗ |
Official order — verbatim text
The consent judgment is notable for its explicit stipulation that all 11 patents are ‘valid, enforceable, and infringed’ — language that goes beyond a standard settlement dismissal. This phrasing creates a court record that Sun cannot easily disavow in future proceedings. The carve-out in paragraph 2, preserving Sun’s challenge rights for products outside the five named ANDAs, was clearly negotiated: it prevents the judgment from being read as a broad admission of patent validity in any context, limiting its preclusive effect to the specific ANDA product set.
US9949998B2 & US8551957B2 — empagliflozin pharmaceutical compositions
US9949998B2 (application No. US14/918727) and US8551957B2 (application No. US12/673327) are two of 11 patents Boehringer asserted in this consolidated action. Both relate to empagliflozin — a selective SGLT2 inhibitor approved for type 2 diabetes and, subsequently, heart failure and chronic kidney disease. The patents cover pharmaceutical compositions and formulation aspects of empagliflozin-containing products, sitting within a broader estate that also spans combination therapies with linagliptin and metformin.
Empagliflozin’s commercial trajectory — Jardiance generated over $6 billion globally in recent years — makes this patent estate among the most commercially significant in the cardiovascular-metabolic space. The consent judgment’s confirmation that both patents are valid and infringed reinforces their enforceability against this specific generic challenger. Competitors and ANDA filers working on empagliflozin or SGLT2 inhibitor generics must now account for a court-validated 11-patent wall when assessing freedom-to-operate and litigation risk.
Should your team run an FTO against US9949998B2 and US8551957B2?
Any company developing generic empagliflozin tablets, SGLT2/DPP-4 inhibitor combinations, or metformin co-formulations should treat this consent judgment as a red flag requiring immediate FTO analysis. The 11-patent portfolio confirmed here covers compound, composition, and combination dimensions — meaning narrow design-arounds face compounding hurdles. R&D teams working on Jardiance, Glyxambi, Synjardy, or Trijardy XR equivalents should assess each patent’s claim scope, expiry dates, and any pending continuations before advancing ANDA filings.
PatSnap Eureka’s FTO Search Agent can map the full Boehringer empagliflozin patent family against your proposed formulation, flag active claims posing infringement risk, and surface relevant prior art that could support IPR or inter partes challenge strategies. Given that Sun’s consent judgment preserves challenge rights for non-ANDA products, Eureka can also help identify which claim elements remain contestable in alternative product contexts — enabling a targeted, cost-efficient clearance strategy.
Run a freedom-to-operate analysis on US9949998B2 to assess your product’s exposure
Run FTO in Eureka →Similar ANDA empagliflozin & SGLT2 inhibitor patent cases in Delaware
Cases involving SGLT2 inhibitor ANDA litigation in Delaware District Court with multi-patent consent judgments or formulation infringement claims.
Related patent case — similar technology
Comparable case in the same technology domain. Patent holder and defendant reached resolution after proceedings.
SettledRelated infringement action — same court
Comparable GLYXAMBI® (empagliflozin/linagliptin) tablets 10 mg/5 mg and 25 mg/5 mg dosages-adjacent infringement action. Patent enforcement dynamics analysed in depth.
Active · District CourtRelated invalidity challenge — appellate outcome
Combined invalidity and infringement action in the same technology space. Decided after substantive proceedings.
DecidedBoehringer-Ingelheim’s broader IP enforcement history
Boehringer-Ingelheim’s full litigation history covering prior enforcement, licensing activity, and inter partes review proceedings.
Portfolio viewWhat this case signals for the SGLT2 inhibitor and ANDA IP landscape
An 11-patent consent judgment covering five ANDAs sets a high bar for generic entry into the empagliflozin franchise and signals how layered pharmaceutical patent portfolios function in practice.
Stacked patent portfolios deter generic entry even after prolonged litigation
Boehringer’s 11-patent estate — covering the compound, formulations, and combinations — created a litigation burden that ultimately led Sun to stipulate infringement rather than pursue adjudication to judgment. For IP strategists, this case reinforces the defensive value of layered pharmaceutical patent portfolios, particularly when combination-therapy patents extend beyond compound patent expiry.
Consent judgments with injunctions are strategically superior to voluntary dismissals
Unlike a simple dismissal, this consent judgment creates court-enforceable obligations binding Sun’s successors and assigns. Brand-side IP teams should note this structure as a preferred resolution template in ANDA litigation: it achieves exclusivity enforcement without the cost and uncertainty of a full trial, while preserving the originator’s right to enforce if terms are breached.
The ANDA carve-out signals a potential authorised-generic or licensing arrangement
Preserving Sun’s right to challenge these patents for non-ANDA products, combined with no-costs dismissal without prejudice, is a pattern consistent with a confidential commercial side agreement — potentially an authorised-generic licence with a defined entry date. Generic market modellers and payer analysts should monitor Sun’s ANDA approval status and any future supplemental filings for signals of a negotiated launch window.
Pediatric exclusivity and patent term extensions remain live risk factors for generic timing
The consent judgment explicitly incorporates any future patent term extensions, adjustments, and pediatric exclusivity into the injunction period. This means Sun’s market entry date cannot be calculated from patent face expiry alone. Any generic entrant — or investor modelling Jardiance LOE — must track regulatory exclusivity milestones separately from patent expiry dates across all 11 asserted patents.
Boehringer-Ingelheim v Sun — key questions answered
The consent judgment, entered July 30, 2025, requires Sun Pharmaceutical to refrain from making, selling, importing, or distributing its ANDA empagliflozin products in the US until all 11 Boehringer patents expire, including any term extensions or pediatric exclusivity. Sun stipulated that all 11 patents are valid, enforceable, and infringed by its ANDA products.
Boehringer asserted 11 US patents: 7,713,938; 8,551,957; 9,949,998; 10,258,637; 9,155,705; 9,415,016; 10,022,379; 10,406,172; 10,596,120; 7,579,449; and 11,090,323, covering empagliflozin compound, formulation, and combination therapy aspects across Jardiance, Glyxambi, Synjardy, Synjardy XR, and Trijardy XR.
Dismissal without prejudice preserves Boehringer’s right to re-file if Sun breaches the consent judgment terms. It does not diminish the injunction — the court retains jurisdiction to enforce the consent judgment. This structure is common in negotiated ANDA resolutions where the parties want enforcement mechanisms without a permanent merits record on every claim.
Yes, within limits. The consent judgment explicitly preserves Sun’s right to challenge the 11 patents in connection with any product other than the five ANDAs covered by the judgment (Nos. 212343, 212339, 214843, 215873, and 215529). Sun cannot challenge the patents as to those specific ANDA products but retains challenge rights for other product contexts.
Sun’s ANDAs covered generic versions of: Jardiance (empagliflozin 10 mg and 25 mg tablets), Glyxambi (empagliflozin/linagliptin 10/5 mg and 25/5 mg), Synjardy (empagliflozin/metformin HCl), Synjardy XR (empagliflozin/metformin HCl extended-release), and Trijardy XR (empagliflozin/linagliptin/metformin HCl extended-release) across multiple dosage strengths.
Track the empagliflozin patent landscape and ANDA risk in real time
This 11-patent consent judgment confirms Boehringer’s empagliflozin franchise is protected through multiple patent expiries. Use PatSnap Eureka to monitor continuation filings, track competing ANDA challenges, and run FTO screening for your SGLT2 inhibitor pipeline.
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