# AstraZeneca

Type: Company (AZN)

Source: Legal & RegTech Intelligence Brief — https://getlegalbrief.com/entity/astrazeneca
Canonical HTML page: https://getlegalbrief.com/entity/astrazeneca

## Timeline

- **2026-07-23**: Tenth Circuit reverses and remands — A three-judge panel holds that the PREP Act immunizes all claims for loss, including breach of contract, but remands for the lower court to determine whether AstraZeneca waived immunity via the informed consent form.
- **2026-03-13**: Vulnerability Reported — Dan Neidle of Tax Policy Associates alerts Companies House to the 'back key' security flaw.
- **2026-03-13**: Service Suspension — Companies House takes the WebFiling service offline on Friday evening to investigate the issue.
- **2026-03-13**: Guidance Issued — Official guidance released advising users on how to handle missed filing deadlines due to the outage.
- **2024-11**: District court denies motion to dismiss — A federal district judge rules that Dressen's breach-of-contract claim may not be barred by the PREP Act's immunity, allowing the lawsuit to proceed.
- **2020**: Clinical trial participation and alleged injury — Brianne Dressen receives AstraZeneca's COVID-19 trial vaccine and later experiences debilitating symptoms. She signs an informed consent form stating the company would cover injury-related medical costs.

## Recent coverage (3 stories)

### £300bn AstraZeneca-BMS Merger Faces Antitrust Firestorm Under Trump
2026-08-03 09:57:14 · Sentiment: Neutral · Impact: 9/10 · Sources: 4

The proposed mega-merger would immediately trigger intense antitrust reviews in the US, EU, and UK, testing the limits of Trump-era competition enforcement in the pharmaceutical sector. Significant divestitures and political pushback are likely, with a real risk of deal collapse.
Full story: https://getlegalbrief.com/story/astrazeneca-bms-merger-antitrust-300bn

### 10th Circuit: PREP Act Covers Contract Claims, Remands AstraZeneca Waiver Issue
2026-08-01 11:58:22 · Sentiment: Bullish · Impact: 6/10 · Sources: 2

In a significant interpretation of the PREP Act, a Tenth Circuit panel held that the statute's immunity extends to contractual damages, rejecting a plaintiff's breach-of-contract theory. The court also remanded to consider whether AstraZeneca's informed consent form constituted a waiver of that immunity.
Full story: https://getlegalbrief.com/story/legal-prep-act-breach-contract-immunity-astrazeneca

### Companies House Suspends WebFiling After Critical Data Vulnerability Exposed
2026-03-14 00:22:09 · Sentiment: Bearish · Impact: 7/10 · Sources: 2

The UK’s Companies House has taken its WebFiling service offline following the discovery of a critical security flaw that allowed users to view and edit sensitive personal data of company directors. The vulnerability, which could be exploited simply by using a browser's back button, has raised significant concerns regarding corporate identity theft and the integrity of the UK's business register.
Full story: https://getlegalbrief.com/story/companies-house-webfiling-data-vulnerability-suspension

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