How to Change Your FDA US Agent Before the Annual Registration Renewal Period

You Do Not Have to Wait Until October to Change Your FDA US Agent

If you are a foreign medical device manufacturer registered with the FDA, you already know that the annual registration renewal window opens every October 1 and closes December 31. What many regulatory professionals and company leadership do not realize is that you are not locked into your current US Agent until that window opens. FDA regulations permit -- and in some cases require -- you to update your US Agent designation outside the renewal period, and failing to understand this distinction can create serious compliance exposure.

This post breaks down the regulatory framework, the practical mechanics of making a mid-year change, and the critical mistakes we see companies make when they try to navigate this process alone.

The Regulatory Foundation: What 21 CFR Part 807 Actually Says

Under 21 CFR 807.40, every foreign establishment that is required to register with the FDA must designate a US Agent. The US Agent serves as the primary communication link between your company and the FDA -- they receive correspondence, facilitate inspections, and are expected to be reachable by phone during US business hours.

The FDA's guidance document 'Establishment Registration and Device Listing for Manufacturers and Initial Importers of Devices' reinforces that the US Agent must be a person or firm physically located in the United States. Critically, FDA expects the US Agent information on file to be current and accurate at all times, not merely accurate during the October-December renewal window.

This is the point most companies miss: 21 CFR 807.26 requires that registration information be updated within 30 days of any change. That obligation does not pause between renewal cycles. If your US Agent relationship ends in March, you have 30 days to update your registration -- full stop.

Common Scenarios That Require a Mid-Year US Agent Change

There are several situations that routinely force foreign manufacturers to update their US Agent designation outside the annual window:

• Your current US Agent ceases operations or loses staff capacity -- A solo consultant who retires or a small firm that closes cannot fulfill the statutory obligation. You need a replacement immediately.
• Your US Agent fails to respond to FDA communications -- If FDA cannot reach your agent by phone or email, you are at risk of a Warning Letter or import alert, regardless of whether it is renewal season.
• A change in your regulatory strategy -- Pursuing a 510(k), preparing for a Pre-Sub meeting, or anticipating a facility inspection all require a US Agent who can actively support your regulatory activities, not just hold the designation.
• A contractual dispute or termination -- Business relationships end. When they do, your FDA registration must reflect reality within 30 days.
• Acquisition or restructuring -- If your parent company, distributor, or regulatory partner changes, the US Agent on file must be updated accordingly.

How to Update Your US Agent Outside the Renewal Window

The process is straightforward, but the sequencing matters. Here is what a compliant mid-year US Agent change looks like in practice:

Step 1: Confirm Your New US Agent Meets Statutory Requirements

Your new US Agent must be physically located in the United States, must agree in writing to serve in that capacity, and must be available by phone during US business hours. An email address alone does not satisfy FDA's accessibility requirement under the spirit of 21 CFR 807.40.

Step 2: Log Into FDA Unified Registration and Listing System (FURLS)

All registration updates are made through the FDA's FURLS / CDRH Device Registration and Listing Module (DRLM). You do not need to wait for an invitation or a renewal prompt. The system allows updates to contact and agent information year-round.

Step 3: Submit the Updated Registration Information

Navigate to your existing establishment registration, update the US Agent fields, and submit. FDA does not charge a fee for mid-year contact updates -- only the annual registration fee assessed at renewal applies. Keep a timestamped record of your submission confirmation for your regulatory files.

Step 4: Notify Your New Agent of Any Open FDA Correspondence

This is operationally critical. If FDA has any open queries, inspection scheduling requests, or device listing discrepancies, your new US Agent must be briefed immediately. A gap in communication during a transition is one of the fastest ways to escalate a minor FDA inquiry into a formal action.

What Happens If You Do Not Update in Time

FDA takes stale or inaccurate registration data seriously. An establishment with an unreachable US Agent can be flagged during import screening, which may result in detention of your devices at the US border under 21 CFR 820 and the associated import alert framework. Beyond the supply chain disruption, inaccurate registration information can complicate or delay a premarket submission review -- a 510(k) reviewer who cannot verify your establishment registration status will put your submission on hold.

Why the Right US Agent Is a Strategic Asset, Not a Checkbox

Many foreign manufacturers treat the US Agent designation as a compliance formality -- a name and address to satisfy FDA's database. That framing is a liability. Your US Agent is the entity that FDA will contact first if there is a problem with your product, your labeling, or your manufacturing processes. They need to understand your device, your regulatory history, and the appropriate escalation path when FDA comes knocking.

At ADB Consulting and CRO Inc., we serve as US Agent for foreign device manufacturers who need more than a registered address. We provide active regulatory intelligence, Pre-Sub preparation support, and real-time FDA communication management -- because your US Agent should add value, not just fulfill a filing requirement.

Take Action Before a Gap in Coverage Creates a Compliance Problem

If your current US Agent relationship is uncertain, your agent has become unresponsive, or you are simply unsure whether your registration reflects accurate information today, do not wait until October to address it. The 30-day update requirement under 21 CFR 807.26 is not a suggestion, and FDA's enforcement posture on registration accuracy has tightened in recent years.

Book a free discovery call with Andre Butler at ADB Consulting and CRO Inc. to review your current registration status, evaluate whether your US Agent coverage meets FDA expectations, and get a clear plan for making any necessary changes quickly and compliantly. Visit adbccro.com to schedule your call today.

Related reading: our FDA establishment registration and listing service covers this in more depth.