Sorrento Therapeutics Inc. v. Anthony Mack

Court of Chancery of Delaware·Decided April 2, 2026·No. C.A. No. 2021-0210-PAF·Published

Opinion

IN THE COURT OF CHANCERY OF THE STATE OF DELAWARE

SORRENTO THERAPEUTICS, ) INC., a Delaware corporation, and ) SCILEX PHARMACEUTICALS ) INC., a Delaware corporation, )

)

Plaintiffs, )

)

v. ) C.A. No. 2021-0210-PAF )

ANTHONY MACK, )

)

Defendant. )

ORDER ADDRESSING APPLICATION FOR ATTORNEYS’ FEES AND EXPENSES

WHEREAS:

A. On March 12, 2021, plaintiffs Sorrento Therapeutics, Inc. (“Sorrento”)

and Scilex Pharmaceuticals, Inc. (“Scilex,” and with Sorrento, “Plaintiffs”) filed their original complaint in this action against defendants Anthony Mack and Virpax Pharmaceuticals, Inc. (“Virpax,” and with Mack, “Defendants”).

B. Plaintiffs later filed amended complaints. The operative complaint asserted claims against Mack for breach of an employment agreement and a restrictive covenants agreement, breach of fiduciary duty, and misappropriation of trade secrets, and against Virpax for tortious interference, aiding and abetting Mack’s breaches of fiduciary duty, and misappropriation of trade secrets.

C. On September 1, 2023, the court issued a post-trial opinion on liability (the “Liability Opinion”). The Liability Opinion reflected a mixed result for the parties. The Liability Opinion found that Mack had breached the restrictive covenants agreement and that Virpax had tortiously interfered with that agreement. The court also found that Mack had breached his fiduciary duties by diverting certain corporate opportunities to his other enterprises, including Virpax, and that he had improperly used Scilex employees, funds, and data to develop those opportunities. The court concluded that Virpax had aided and abetted Mack’s breaches of fiduciary duty.

D. Plaintiffs obtained a much more modest victory on their claims for misappropriation of trade secrets. Despite Plaintiffs’ contention that Defendants misappropriated trade secret information contained in more than a thousand documents, the court found that Plaintiffs met their burden of proof as to information contained in only five of those documents.

E. After the court issued the Liability Opinion, Plaintiffs and Virpax entered into a settlement agreement, leaving Mack as the lone defendant. On July 31, 2025, the court issued an opinion determining the appropriate remedy (the “Remedy Opinion”). The Remedy Opinion concluded that Mack was not liable for damages for breach of the restrictive covenants agreement or misappropriation of trade secrets. The court extended the duration of the restrictive covenants agreement

and permanently enjoined Mack from using or disclosing any of the trade secret information that he had misappropriated. The Remedy Opinion found that Plaintiffs had proved damages of $540,576 for Mack’s breaches of his duty of loyalty, but because of the settlement agreement between Plaintiffs and Virpax, that amount was reduced to zero.

F. The court also determined that Mack had “engaged in intentional misconduct in clear violation of his duty of loyalty.” Remedy Op. at 47. The Remedy Opinion also found Mack’s conduct to be “willful and malicious” and that he had engaged in litigation misconduct, all of which warranted fee shifting. Id. Mindful that Plaintiffs were only partially successful on their claims, the court, in the exercise of its discretion, awarded Plaintiffs one-third of their reasonable attorneys’ fees and expenses in pursuing this litigation, to be paid by Mack. Id. at 49.

G. Plaintiffs and Mack were unable to reach agreement on the amount of attorneys’ fees to be awarded to Plaintiffs. Plaintiffs have documented a total of $16,134,946.06 in attorneys’ fees and expenses, for which they seek one-third, or $5,378,315.35.1 Mack challenges that amount as unreasonable.2 Mack argues that

1 Ma Aff. ¶ 7.

2 Mack’s Opposition Br. ¶ 6.

Plaintiffs’ reasonable fees in this case are no more than $7,251,521.78, leaving Mack responsible for no more than $2,417,173.93.3 NOW, THEREFORE, the court having carefully considered Plaintiffs’

application for attorneys’ fees and expenses and Mack’s opposition thereto, IT IS HEREBY ORDERED, this 2nd day of April, 2026, as follows:

1. “Delaware law dictates that, in fee shifting cases, a judge [must]

determine whether the fees requested are reasonable.” Mahani v. Edix Media Grp., Inc., 935 A.2d 242, 245 (Del. 2007). The court has broad discretion in making this determination. Black v. Staffieri, 2014 WL 814122, at *4 (Del. Feb. 27, 2014) (TABLE) (citing Kaung v. Cole Nat’l Corp., 884 A.2d 500, 506 (Del. 2005)). To assess a fee’s reasonableness, the court considers the factors set forth in the Delaware Lawyers’ Rules of Professional Conduct. See Mahani, 935 A.2d at 245–46. The relevant factors are as follows:

(1) the time and labor required, the novelty and difficulty of the questions involved, and the skill requisite to perform the legal service properly;

(2) the likelihood, if apparent to the client, that the acceptance of the particular employment will preclude other employment by the lawyer;

(3) the fee customarily charged in the locality for similar legal services;

(4) the amount involved and the results obtained;

3 Mack’s Opposition Br. 15.

(5) the time limitations imposed by the client or by the circumstances;

(6) the nature and length of the professional relationship with the client;

(7) the experience, reputation, and ability of the lawyer or lawyers performing the services;

(8) whether the fee is fixed or contingent.

Del. Lawyers’ R. Prof’l Conduct 1.5(a).

2. “Determining reasonableness does not require that this Court examine individually each time entry and disbursement.” Aveta Inc. v. Bengoa, 2010 WL 3221823, at *6 (Del. Ch. Aug. 13, 2010). “Just because the court will not review each line item individually[, however,] . . . does not mean that the party seeking [attorneys’ fees] can play fast and loose . . . . [C]ounsel must make a good faith determination regarding the fees and expenses to which its clients are entitled.” Weil v. VEREIT Operating P’ship, L.P., 2018 WL 834428, at *12 (Del. Ch. Feb. 13, 2018). Delaware courts, however, generally eschew second-guessing an attorney’s judgment as to whether work was necessary or appropriate. Arbitrium (Cayman Is.) Handels AG v. Johnston, 1998 WL 155550, at *4 (Del. Ch. Mar. 30, 1998), aff’d, 720 A.2d 542 (Del. 1998). Such hindsight review “is hazardous and should[,] whenever possible[,] be avoided.” Id.; accord Lynch v. Gonzalez, 2020 WL 5587716, at *2 (Del. Ch. Sept. 18, 2020), aff’d, 253 A.3d 556 (Del. 2021). One indication of reasonableness is a party’s agreement to an hourly fee arrangement that commits the client to pay fees incurred regardless of the outcome of the litigation.

See State Wis. Inv. Bd. v. Bartlett, 2002 WL 568417, at *6 (Del. Ch. Apr. 9, 2002) (“[A]n arm’s length agreement, particularly with a sophisticated client, as in this instance, can provide an initial ‘rough cut’ of a commercially reasonable fee.”), aff’d, 808 A.2d 1205 (Del. 2002) (citation modified); Aveta, 2010 WL 3221823, at *6 (“A further indication of reasonableness is the reality that when [the plaintiff] filed its motion to enforce and paid the expenses it now seeks to recover, [the plaintiff] did not know that it would be able to shift those expenses to [the defendant].”). This arrangement is an indication of reasonableness because the risk of having to actually pay those fees provides the fee-seeking party sufficient incentive to monitor its counsel’s work and ensure that counsel does not engage in excessive or unnecessary efforts. Id. at *6. “When awarding expenses as a contempt sanction or for bad faith litigation tactics, this Court takes into account the remedial nature of the award.” Id. “Such an award is designed to make whole the party who was injured by the other side’s contumely.” Id.

Free access — add to your briefcase to read the full text and ask questions with AI

Sorrento Therapeutics Inc. v. Anthony Mack, (Del. Ct. App. 2026).

Sorrento Therapeutics Inc. v. Anthony Mack (Sorrento Therapeutics Inc. v. Anthony Mack) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

Related

Mahani v. Edix Media Group, Inc.
935 A.2d 242 (Supreme Court of Delaware, 2007)
Kaung v. Cole National Corp.
884 A.2d 500 (Supreme Court of Delaware, 2005)
Johnston v. Arbitrium (Cayman Islands) Handels AG
720 A.2d 542 (Supreme Court of Delaware, 1998)
Cohen v. Cohen
269 A.2d 205 (Supreme Court of Delaware, 1970)
May v. Bigmar, Inc.
838 A.2d 285 (Court of Chancery of Delaware, 2003)
Danenberg v. Fitracks, Inc.
58 A.3d 991 (Court of Chancery of Delaware, 2012)