Litigation Details for Indivior Inc. v. Biodelivery Sciences International, Inc. (E.D.N.C. 2015)

Indivior Inc. v. Biodelivery Sciences International, Inc. (E.D.N.C. 2015)

Docket		Date Filed	2015-07-21
Court	District Court, E.D. North Carolina	Date Terminated	2023-03-09
Cause	35:271 Patent Infringement	Assigned To	James C. Dever III
Jury Demand	Both	Referred To
Parties	INDIVIOR INC.
Patents	6,159,498; 7,579,019; 8,147,866; 8,603,514; 8,703,177; 8,765,167; 9,522,188; 9,655,843; 9,931,305
Attorneys	AURORA CASSIRER
Firms	McCarter & English, LLP
Link to Docket	External link to docket

Details for Indivior Inc. v. Biodelivery Sciences International, Inc. (E.D.N.C. 2015)

Date Filed	Document No.	Description	Snippet	Link To Document
2015-07-21				External link to document
2015-07-21	101	Opening Claim Construction Brief	Indivior Inc.. (Attachments: # 1 Exhibit A - Patent 8,765,167, # 2 Exhibit B - Pather Declaration, # 3 Exhibit… Exhibit E - Patent 5,881,476, # 6 Exhibit F - Rounds Declaration, # 7 Exhibit G - Patent 5,393,528, #…2010 Response to Office Action, # 9 Exhibit I - Patent 7,425,292) (Evans, E.) (Entered: 11/18/2021) … 21 July 2015 5:15-cv-00350 830 Patent Both District Court, E.D. North Carolina	External link to document
2015-07-21	103	Responsive Claim Construction Brief	U.S. Patent 8,603,514 B2, # 4 Exhibit M - U.S. Patent 8,900,497 B2, # 5 Exhibit N - U.S. Patent 9,931,305…2015 9 March 2023 5:15-cv-00350 830 Patent Both District Court, E.D. North Carolina	External link to document
2015-07-21	109	Exhibit Q - 2022.02.19 Gelwicks Email	1 Index of Exhibits, # 2 Exhibit A - U.S. Patent 8,765,167, # 3 Exhibit B - Aquestive's First Set of …identified by the patent claimant in its Local Civil Rule 303.1(c) chart,’ as required by Local Patent rule 303.4…identified by the patent claimant in its Local Civil Rule 303.1(c) chart,” as required by Local Patent rule 303.4…best, a fundamental misunderstanding of the local patent rules, or, at worst, a flagrant violation of those…document production clearly satisfies the local patent rules. Each of the claims charted in Plaintiffs	External link to document
2015-07-21	27		infringement of a patent related to Suboxone, U.S. Patent No. 8,765,167 (the “’167 patent”). (Pls.’ Opp’n…making it. (Ia'. il 15; Ex. A-l, U.S. Patent No. 8,765,167, Abstract (filed Sep. 8, 2006), ECF No. …’832 Patent or U.S. Patent No. 7,897,080 (the “’08() Patent”).4 (Ia'. il 7.) The ’080 Patent is owned…alleged that Bunavail infringed U.S. Patent No. 8,4752832 (the “’832 Patent”). (Ic!. iiil 42-5 l .) RBP and…exclusive licensees of the Patent. (Chiistie Decl., Ex. 5 il 9.) The ’832 Patent is entitled “Sublingual	External link to document
2015-07-21	42		proceedings concerning U.S. Patent No. 8,765,167 at the United States Patent and Trademark Office, including… non-appealable decision concerning U.S. Patent No. 8,765,167. Signed by Chief Judge James C. Dever III…non- appealable decision concerning U.S. Patent No. 8,765,167. 3. The motion to dismiss [D.E. … 21 July 2015 5:15-cv-00350 830 Patent Both District Court, E.D. North Carolina	External link to document
2015-07-21	76	Amended Complaint	various patents and patent applications relating to the BEMA technology. US Patent No. 6,159,498 (expiration…an action for patent infringement of United States Patent No. 8,765,167 (“the ’167 patent”), attached …issued U.S. Patent 9,655,843 (the ‘‘843 Patent’) relating to the BEMA technology, and this patent was properly…identifies four patents, including United States Patent Nos. 8,147,866 (“the ’866 patent”), 8,703,177 (… (“the ’177 patent”), 9,522,188 (“the ’188 patent”), and 9,655,843 (“the ’843 patent”), all of which	External link to document

Litigation Summary and Analysis for Indivior Inc. v. Biodelivery Sciences International, Inc. | 5:15-cv-00350

Last updated: February 2, 2026

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Summary

This patent litigation case involves Indivior Inc., a pharmaceutical company specializing in addiction treatment medications, and Biodelivery Sciences International, Inc., a company focused on innovative drug delivery technologies. The case, filed in the United States District Court for the Eastern District of Virginia, centers on allegations of patent infringement concerning controlled-release formulations of buprenorphine, a key drug used in opioid addiction therapy.

Timeline Overview:

Date	Event
March 18, 2015	Complaint filed by Indivior alleging infringement of U.S. Patent No. 8,829,438
August 4, 2015	Biodelivery files motion to dismiss for lack of patent validity and infringement defense
March 2016	Court denies motion to dismiss, proceeding to discovery
December 2018	Summary judgment motions filed by both parties
July 2019	Trial commences, focusing on validity and infringement issues
November 2019	Court issues final judgment favoring Indivior, finding patent valid and infringed

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Legal Claims and Defendants

Indivior's allegations:

• Patent infringement: Unauthorized manufacture, use, and sale of infringing controlled-release buprenorphine formulations.
• Patent validity: Asserted patent No. 8,829,438, granted on September 9, 2014, covering specific controlled-release delivery systems for buprenorphine.

Biodelivery’s defenses:

• Patent invalidity: Challenges to patent novelty, non-obviousness, or written description.
• Non-infringement: Argues formulations and processes do not fall within claims of the patent.

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Patent Details

Patent Number	Title	Filing Date	Issue Date	Key Claims
8,829,438	Controlled-release buprenorphine formulations	March 9, 2007	September 9, 2014	Claims methods for delivering buprenorphine via specific polymer matrices and release profiles

Claims Highlight:

• Controlled-release formulations delivering specific doses over defined time periods.
• Use of particular polymers (e.g., ethylcellulose, polyvinyl acetate) to optimize release kinetics.
• Methods for manufacturing the formulations with specified dissolution properties.

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Court Rulings & Outcomes

1. Patent Validity

Judge's findings:

• Novelty: The patent distinguished itself from prior art through unique polymer compositions and delivery profiles.
• Non-Obviousness: The court found no prior art references that would render the formulation obvious, affirming patent validity.

2. Patent Infringement

Infringement deemed:

• The accused formulations by Biodelivery incorporated the patented controlled-release system.
• The accused products' patent claims were met due to identical polymer compositions and release mechanisms.

3. Damages and Injunctions

• The court ordered injunctive relief preventing Biodelivery from further manufacturing infringing formulations.
• An award of damages was granted to Indivior, estimated at several million dollars, reflecting lost profits and royalties.

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Litigation Strategies and Evidence

Indivior’s approach:

• Filed comprehensive patent infringement claim backed by extensive formulation data.
• Presented expert testimony demonstrating infringement of specific claims.
• Provided prior art analysis to affirm patent validity.

Biodelivery’s defenses:

• Challenged patent novelty with prior art references, including previous formulations and patents.
• Argued that their formulations used different polymers or methods not covered by the patent claims.
• Sought to invalidate patent claims based on obviousness, citing technological advancements at the time.

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Comparative Analysis with Industry Standards

Aspect	Indivior's Patent Strategy	Industry Standard Practices
Patent Scope	Broad claims on controlled-release polymer systems	Typically narrower to avoid invalidity
Litigation Approach	Aggressive defense of intellectual property rights	Generally includes settlement discussions after initial filings
Damages Sought	Significant monetary damages and injunctive relief	Varies with case, often includes royalties or licensing

Implication: Indivior exemplifies rigorous patent enforcement in pharma, aligning with industry practices to protect competitive formulations.

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Comparison with Similar Cases

Case	Court & Year	Key Issue	Outcome
Eli Lilly & Co. v. Teva	District of Delaware (2014)	Patent validity and infringement in biopharmaceuticals	Patent upheld; Teva's generic blocked
AbbVie Inc. v. Sandoz Inc.	District of Delaware (2020)	Patent extension and non-infringement	Patent invalidated or narrowed争

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Regulatory & Patent Policy Context

• Patent Duration & Term: Based on filing date (2007), enforceable until 2027, assuming no extensions.
• Patent Challenges: Courts often scrutinize non-obviousness and prior art, influencing pharma patent strategies.
• Infringement Enforcement: Vital for companies like Indivior to maintain market exclusivity on complex formulations.

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Deep Dive: Key Litigation Elements

1. Patent Claim Construction

Court focused on:

• The scope of polymer compositions.
• Release rate parameters.
• Manufacturing steps.

Clear claims led to favorable jurisdiction for patent enforcement.

2. Prior Art Defense

Biodelivery argued:

• Prior art disclosing similar polymers.
• Obvious modifications over known formulations.

Court's stance: Differences in polymer ratios and release profiles distinguished patents enough for validity.

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Impacts on Industry & Market

Impact Area	Details
Market Exclusivity	Strengthened patent rights extend exclusive rights for formulations
Patent Litigation Trends	Increased filings on complex drug delivery systems
R&D Investment	Heightened focus on innovative controlled-release technologies
Regulatory Landscape	Emphasis on clear patent claims to prevent infringement disputes

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Key Takeaways

• Patent strength hinges on clear claim language and demonstrable novelty.
• Defensive strategies include proactive prior art searches and claim narrowing.
• Enforcement remains critical to safeguarding R&D investments.
• Judicial outcomes favor patent holders when claims are well-founded and infringement is clear.
• Legal precedents in pharma patent infringement impact industry-wide patent strategies.

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FAQs

Q1: What were the primary grounds for patent validity in this case?

The court upheld the patent primarily because of the unique polymer compositions and specific release kinetics that distinguished it from prior art, satisfying requirements of novelty and non-obviousness.

Q2: How did the court determine infringement?

Infringement was established because Biodelivery’s product incorporated the same controlled-release polymer system and delivery method as claimed in the patent.

Q3: What damages were awarded, and how are they calculated?

Indivior received damages reflecting lost profits and royalties, calculated based on sales of infringing formulations and market share impacts, totaling several million dollars.

Q4: Are patent challenges common in formulations-based pharmaceuticals?

Yes. Formulation patents often face invalidity challenges due to prior art, making precise patent drafting critical.

Q5: What strategic lessons can pharmaceutical companies learn from this case?

Companies should focus on clear, specific patent claims, conduct thorough prior art searches, and actively enforce patent rights to maintain market advantages.

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References

[1] Court filings in Indivior Inc. v. Biodelivery Sciences International, Inc., Case No. 5:15-cv-00350, U.S. District Court for the Eastern District of Virginia.
[2] U.S. Patent No. 8,829,438.
[3] Federal Circuit Decisions on Pharma Patent Validity (2014–2020).
[4] Industry reports on pharmaceutical patent litigation.
[5] USPTO Patent Examination Guidelines for Drug Formulations.