David Kabakoff, Ph.D. and Arnold Oronsky, Ph.D. v. Zeneca, Inc. and MedImmune, LLC

Court of Chancery of Delaware·Decided November 18, 2020·No. C.A. No. 2017-0459-JRS·Published

Opinion

IN THE COURT OF CHANCERY OF THE STATE OF DELAWARE

DAVID KABAKOFF, PH.D. and ) ARNOLD ORONSKY, PH.D., in their ) capacity, collectively, as Stockholders’ ) Agent, )

)

Plaintiffs, )

)

v. ) C.A. No. 2017-0459-JRS )

ZENECA, INC., a Delaware ) corporation, and MEDIMMUNE, LLC, ) a Delaware limited liability company, )

)

Defendants. )

MEMORANDUM OPINION

Date Submitted: August 5, 2020 Date Decided: November 18, 2020

Blake A. Bennett, Esquire and Dean R. Roland, Esquire of Cooch and Taylor, P.A., Wilmington, Delaware and Todd M. Schneider, Esquire, Joshua G. Konecky, Esquire, Kyle G. Bates, Esquire, Nathan B. Piller, Esquire of Schneider Wallace Cottrell Konecky LLP, Emeryville, California, Attorneys for Plaintiffs.

Michael P. Kelly, Esquire, Daniel M. Silver, Esquire, Benjamin A. Smyth, Esquire of McCarter & English LLP, Wilmington, Delaware and Dane H. Butswinkas, Esquire, Sarah F. Kirkpatrick, Esquire, Jessica L. Pahl, Esquire and Joseph M. Piligian, Esquire of Williams & Connolly LLP, Washington, DC, Attorneys for Defendants.

SLIGHTS, Vice Chancellor

In the realm of commercial pharmacology, the fight against cancer is as competitive as it is promising. An area of particular promise is the development of so-called PD-1 and PD-L1 inhibitors as anti-cancer therapies. These therapies do not directly attack cancer cells, like traditional chemotherapies (with all the attendant, frequently severe side-effects), but instead enable the body’s own immune system more effectively to interfere with the mechanisms that allow cancer cells to grow and spread within the body. This new class of immuno-oncology therapies has the potential to revolutionize cancer treatment, spurring intense competition among pharmaceutical companies.

By the spring of 2013, Defendant, MedImmune, LLC, had established a competitive presence in certain areas of cancer pharmacology but was eager to accelerate its development of an anti-PD-1 therapy. With this goal in mind, MedImmune began to search for acquisition targets that already had a PD-1 drug in development. This search led it to Amplimmune, Inc., a company founded by physicians and scientists and funded by venture capital firms to study and develop cutting edge cancer therapies. Amplimmune had several molecules in development when it was approached by MedImmune, but its PD-1 inhibitor, AMP-514, was among the most promising. Eager to add AMP-514 to its pipeline, MedImmune began negotiating with senior executives of Amplimmune regarding a possible acquisition.

Negotiations moved quickly, culminating in the execution of an Agreement and Plan of Merger (“Merger Agreement”) whereby MedImmune’s parent company, Defendant, Zeneca Inc., agreed to acquire Amplimmune (the “Acquisition”) for an upfront purchase price of $225 million, followed by three contingent milestone payments: (1) $100 million for the “Successful Completion of a Phase 1 Study” of AMP-514 as a monotherapy (the “Monotherapy Milestone”); (2) $50 million for the “Successful Completion of a Phase 1 Study” of AMP-514 in combination with any MedImmune molecule (the “Combination Therapy Milestone”); and (3) $50 million for the “Successful Completion of a Phase 1 Study” of AMP-514 in combination with a second MedImmune molecule.1 The Acquisition closed on October, 4, 2013. 2 As frequently occurs in acquisition agreements containing so-called “earn-out” provisions, the parties now dispute whether (and when) several of the Merger Agreement’s milestones were achieved.

“Successful Completion” is defined in the Merger Agreement as the occurrence of three prongs, all of which must be satisfied before a milestone

1 Joint Pre-Trial Stipulation (“PTO”) ¶¶ 40–42. I cite to the Joint Pre-Trial Stipulation and Order as “PTO ¶ __,” the joint trial exhibits as “JX__,” the trial transcript as “Tr.__ (witness name)”; and depositions lodged as evidence as “(Name) Dep. __.” 2 PTO ¶ 46.

payment is owed. Two of those prongs are at issue in this case.3 For the Monotherapy Milestone, the parties dispute whether there was a regulatory filing for “additional clinical development” of AMP-514 as a monotherapy (the “Monotherapy”) under the third prong. For the Combination Therapy Milestone, the disagreement centers on when a “study report” for the Phase 1 study of the first Combination therapy (the “Combination”) was completed under the second prong.

Plaintiffs, David Kabakoff, Ph.D, and Arnold Oronsky, Ph.D., acting as representatives of Amplimmune’s former stockholders as designated by the Merger Agreement, brought this suit in 2017 claiming the Monotherapy Milestone and Combination Therapy Milestone were both met in early 2016. Plaintiffs also maintain that the Merger Agreement’s acceleration clause (the “Acceleration Clause”) requires Defendants to make all milestone payments related to AMP-514 if the Court determines that Defendants breached their obligations as to any one milestone payment. Because they allege Defendants failed to make two milestone payments in breach of the Merger Agreement, Plaintiffs seek an order compelling Defendants to make all milestone payments, totaling $200 million, plus interest.

3 Plaintiffs voluntarily dismissed before trial claims for unpaid milestone payments related to a separate Amplimmune molecule acquired by MedImmune in the Acquisition. D.I. 111.

Defendants respond that the Monotherapy Milestone has not been, and never will be, achieved because there was no regulatory filing seeking to advance the Monotherapy for additional clinical development. According to Defendants, the Monotherapy performed poorly in clinical trials and all parties appreciated that there was no purpose to be served by pursuing further development after the Phase 1 trial. As for the Combination, Defendants maintain the Combination Therapy Milestone was accomplished only upon the filing with the Food and Drug Administration (“FDA”) of a Clinical Study Report (“CSR”) in the spring of 2020, at which time they promptly made the Combination Therapy Milestone payment in compliance with the Merger Agreement. Finally, Defendants argue that Plaintiffs misread the Merger Agreement’s Acceleration Clause and, even if their reading is correct, the clause cannot be enforced under Plaintiffs’ construction because to do so would impose an unenforceable penalty.

In this post-trial opinion, I find that Plaintiffs have not met their burden of proving the Monotherapy Milestone has been met. I also find that Plaintiffs have not met their burden of proving the Combination Therapy Milestone was owed before that milestone payment was actually made earlier this year. Because I find in favor of Defendants on both of these claims of breach, I need not construe the Acceleration Clause. Judgment will be entered in favor of Defendants on all remaining claims.

I. BACKGROUND

The Court held a five-day trial between February 14–20, 2020. The following facts were proven by a preponderance of the competent evidence.

A. The Parties and Relevant Non-Parties Plaintiffs, David Kabakoff, Ph.D, and Arnold Oronsky, Ph.D., bring this action in their capacity as agents for the former stockholders of Amplimmune. 4 Defendant, Medimmune, is a Delaware limited liability company. At the time the Merger Agreement was executed, MedImmune was the global biologics research and development arm of AstraZeneca plc, a multinational pharmaceutical company.5 Defendant, Zeneca, is a privately held Delaware corporation that operates as a subsidiary of AstraZeneca.6 Prior to the Acquisition, Amplimmune was a privately-held Delaware corporation.7 Its primary focus was on the development of immuno-oncology therapies. 8

4 PTO ¶ 23.

5 Id. ¶¶ 24–26.

6 Id. ¶ 25.

7 Id. ¶ 24.

8 Id.

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David Kabakoff, Ph.D. and Arnold Oronsky, Ph.D. v. Zeneca, Inc. and MedImmune, LLC, (Del. Ct. App. 2020).

David Kabakoff, Ph.D. and Arnold Oronsky, Ph.D. v. Zeneca, Inc. and MedImmune, LLC (David Kabakoff, Ph.D. and Arnold Oronsky, Ph.D. v. Zeneca, Inc. and MedImmune, LLC) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

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