OSENBACH v. SECRETARY OF HEALTH AND HUMAN SERVICES

United States Court of Federal Claims·Decided May 27, 2026·No. 16-0419V·Unpublished

Opinion

In the United States Court of Federal Claims OFFICE OF SPECIAL MASTERS No. 16-419V

************************* CHRISTINA OSENBACH and * BRYAN OSENBACH parents of * B.O., a minor, * Chief Special Master Corcoran

*

Petitioners, * Filed: April 20, 2026

*

v. *

*

SECRETARY OF HEALTH AND * HUMAN SERVICES, *

*

Respondent. *

*

*************************

Sylvia Chin-Caplan, Law Office of Sylvia Chin-Caplan, LLC, Boston, MA, for Petitioners.

Felicia Langel, U.S. Department of Justice, Washington, DC, for Respondent.

DECISIOIN GRANTING FINAL AWARD OF ATTORNEY’S FEES AND COSTS 1

On April 4, 2016, Christina and Bryan Osenbach, on behalf of their minor child, B.O., filed a petition under the National Vaccine Injury Compensation Program (the “Vaccine Program”). 2 Petitioners alleged that as a result of receiving the pneumococcal and inactivated poliovirus vaccines on April 17, 2013, B.O.’s pre-existing, underlying epilepsy/seizure disorder was significantly aggravated. Petition (ECF No. 1) at 1. After trial, a decision denying entitlement was entered on August 8, 2023. See Decision, dated Aug. 8, 2023 (ECF No. 130). Petitioners moved for review of my decision (ECF No. 132), but the motion was denied. Judge Vaccine Order/Opinion, dated Feb. 5, 2024 (ECF No. 137). Their subsequent appeal to the Federal Circuit

1 Under Vaccine Rule 18(b), each party has fourteen (14) days within which to request redaction “of any information furnished by that party: (1) that is a trade secret or commercial or financial in substance and is privileged or confidential; or (2) that includes medical files or similar files, the disclosure of which would constitute a clearly unwarranted invasion of privacy.” Vaccine Rule 18(b). Otherwise, the whole Decision will be available to the public in its present form. Id. 2 The Vaccine Program comprises Part 2 of the National Childhood Vaccine Injury Act of 1986, Pub. L. No. 99-660, 100 Stat. 3755 (codified as amended at 42 U.S.C. §§ 300aa-10–34 (2012)) (hereinafter “Vaccine Act” or “the Act”). All subsequent references to sections of the Vaccine Act shall be to the pertinent subparagraph of 42 U.S.C. § 300aa.

was also unsuccessful. Decision of Court of Appeals for Federal Circuit, dated Aug. 18, 2025 (ECF No. 142).

Petitioners previously requested an interim award of attorney’s fees and costs in December 2016, but their motion was denied, as counsel did not provide a reason for why an award at that juncture was appropriate. See Decision—Interim Attorneys’ Fees and Costs, dated Mar. 29, 2017 (ECF No. 53) (“Interim Fees Mot.”). Petitioners have now filed a motion for a final award of attorneys’ fees and costs. Motion, dated Feb. 18, 2026 (ECF No. 146) (“Final Fees Mot.”). Petitioners requests attorney’s fees and costs relating to the work performed by present counsel (Sylvia Chin-Caplan of the Law Office of Sylvia Chin-Caplan, LLC) (“SCC”)) since her appearance in the matter, as well as fees and costs relating to the work performed by previous counsel (Ronald C. Homer of Conway, Homer, P.C.). Petitioners request a total of $368,135.94— reflecting $329,325.48 for SCC ($282,249.10 in attorney’s fees, plus $47,076.38 in costs), and $38,784.89 for Conway, Homer, P.C. ($34,438.50 in attorney’s fees, plus $4,346.39 in costs). Final Fees Mot. at 1–2. The costs include Petitioners’ unreimbursed litigations costs, which are discussed in greater detail below.

Respondent reacted to the fees request on February 20, 2026. See Response, dated Feb. 20, 2026 (ECF No. 147) (“Resp.”). Respondent is satisfied that the statutory requirements for an award of attorney’s fees and costs are met in this case, but defers the calculation of the amount to be awarded to my discretion. Resp. at 2, 4. Petitioners did not file a reply.

For the reasons set forth below, I hereby GRANT Petitioners’ motion, awarding fees and costs in the total amount of $368,135.94.

ANALYSIS

I. Petitioner’s Claim had Reasonable Basis

Although the Vaccine Act only guarantees a fees award to successful petitioners, a special master may also award fees and costs in an unsuccessful case if: (1) the “petition was brought in good faith”; and (2) “there was reasonable basis for the claim for which the petition was brought.” Section 15(e)(1). I have in prior decisions set forth at length the criteria to be applied when determining if a claim possessed “reasonable basis” sufficient for a fees award. See e.g., Sterling v. Sec’y of Health & Hum. Servs., No. 16-551V, 2020 WL 549443, at *4 (Fed. Cl. Spec. Mstr. Jan. 3, 2020). Importantly, establishing reasonable basis does not automatically entitle an unsuccessful claimant to fees, but is instead a threshold obligation; fees can still thereafter be limited, if unreasonable, or even denied entirely.

A claim’s reasonable basis 3 is demonstrated through some objective evidentiary showing.

3 Because this claim’s good faith is not in dispute, I do not include a discussion of the standards applicable to that fees prong.

Cottingham v. Sec’y of Health & Hum. Servs., 971 F.3d 1337, 1344 (Fed. Cir. 2020) (citing Simmons v. Sec’y of Health & Hum. Servs., 875 F.3d 632, 635 (Fed. Cir. 2017)). This objective inquiry is focused on the claim—counsel’s conduct is irrelevant (although it may bulwark good faith). Simmons, 875 F.3d at 635. Reasonable basis inquiries are not static—they evaluate not only what was known at the time the petition was filed, but also take into account what is learned about the evidentiary support for the claim as the matter progresses. Perreira v. Sec’y of Health & Hum. Servs., 33 F.3d 1375, 1377 (Fed. Cir. 1994) (upholding the finding that a reasonable basis for petitioners’ claims ceased to exist once they had reviewed their expert's opinion, which consisted entirely of unsupported speculation).

The standard for reasonable basis is lesser (and thus inherently easier to satisfy) than the preponderant standard applied when assessing entitlement, as cases that fail can still have sufficient objective grounding for a fees award. Braun v. Sec’y of Health & Hum. Servs., 144 Fed. Cl. 72, 77 (2019). The Court of Federal Claims has affirmed that “[r]easonable basis is a standard that petitioners, at least generally, meet by submitting evidence.” Chuisano v. Sec’y of Health & Hum. Servs., 116 Fed. Cl. 276, 287 (Fed. Cl. 2014) (internal quotations omitted) (affirming special master). The factual basis and medical support for the claim is among the evidence that should be considered. Carter v. Sec’y of Health & Hum. Servs., 132 Fed. Cl. 372, 378 (Fed. Cl. 2017). Under the Vaccine Act, special masters have “maximum discretion” in applying the reasonable basis standard. See, e.g., Silva v. Sec’y of Health & Hum. Servs., 108 Fed. Cl. 401, 401–02 (Fed. Cl. 2012). 4

Although Petitioners’ claim was ultimately unsuccessful, I find there was sufficient objective basis to entitle them to a fees and costs award. The evidence herein preponderated in favor of the conclusion that B.O. likely suffered from a form of Dravet syndrome that was genetic in origin. Despite the Petitioners’ inability to demonstrate preponderantly a vaccine association, they offered reasonable proof in support of their causation theory, and raised good faith arguments based on objective evidence about the possibility of vaccine aggravation of that genetic disease. Accordingly (and because I find no other reason to deny fees despite the claim’s disposition), a final award of fees and costs in this matter is appropriate.

II. Calculation of Fees

Determining the appropriate amount of the fees award is a two-part process. The first part involves application of the lodestar method—“multiplying the number of hours reasonably expended on the litigation times a reasonable hourly rate.” Avera v. Sec’y of Health & Hum. Servs., 515 F.3d 1343, 1347–48 (Fed. Cir. 2008) (quoting Blum v. Stenson, 465 U.S. 886, 888 (1984)).

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OSENBACH v. SECRETARY OF HEALTH AND HUMAN SERVICES, (uscfc 2026).

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