US Agent Requirements for International Medical Device Manufacturers: Complete Guide
- 10 hours ago
- 13 min read
Every international medical device manufacturer must appoint a US Agent before importing products into the United States. The US Agent acts as FDA's communication point for your foreign establishment and is required for FDA Establishment Registration—which you cannot complete without one. Without a registered US Agent, you cannot legally import medical devices into the US, regardless of device class or regulatory pathway (510(k), De Novo, or PMA). A US Agent must be a person or entity physically located in the United States (not a P.O. box or answering service), reachable during business hours. Cost: may range from $500-$3,000 annually for agent services. Timeline: agent confirmation within 10 business days via FDA's automated system. The US Agent does NOT submit regulatory applications, handle adverse event reporting, or take legal responsibility for your device—their role is strictly limited to facilitating FDA communication with your company.
Who Needs a US Agent?
According to 21 CFR §807.40(b), any foreign establishment engaged in manufacturing, preparing, propagating, compounding, or processing a device imported into the United States must designate a US Agent as part of FDA Establishment Registration.
This requirement applies to:
All device manufacturers outside the US, including:
Contract manufacturers producing devices for US companies
Component manufacturers whose parts become part of finished medical devices
Specification developers who design devices manufactured by third parties
Sterilization facilities processing devices for US market
Repackagers and relabelers of medical devices
All device risk classes:
Class I devices (even if GMP-exempt)
Class II devices (even if 510(k)-exempt)
Class III devices requiring PMA
All regulatory pathways:
Key point: Even if your specific device is exempt from certain FDA requirements (like some Class I devices exempt from 510(k) and GMP), you still need a US Agent. The agent requirement is separate from and independent of device-specific regulatory pathways.
What Does a US Agent Actually Do?
A U.S. Agent’s role is primarily to facilitate communication between FDA and your foreign establishment, including helping FDA coordinate inspection scheduling when requested.
What US Agents ARE responsible for:
Communications relay: FDA may contact your U.S. Agent if FDA cannot reach your foreign establishment directly.
Inspection coordination: Upon FDA request, the U.S. Agent assists FDA in scheduling inspections of the foreign establishment.
Confirming designation in FDA’s system: After designation, the U.S. Agent must confirm within 10 business days, or FDA’s system cancels the receipt code and removes the agent designation.
What US Agents are NOT responsible for:
❌ Submitting regulatory applications (510(k), PMA, De Novo submissions)
❌ Adverse event reporting (Medical Device Reporting under 21 CFR Part 803)
❌ Taking over the manufacturer’s compliance obligations, postmarket activities, or quality system responsibilities.
Critical distinction: A U.S. Agent is not the same as an EU Authorized Representative or UK Responsible Person. The U.S. Agent function is narrower and focused on FDA communications and coordination.
US Agent vs Official Correspondent: What's the Difference?
International manufacturers often confuse the US Agent with the Official Correspondent. These are separate roles with different requirements.
Aspect | US Agent | Official Correspondent |
Who needs one | Foreign establishments ONLY | Both foreign AND domestic establishments |
Primary role | FDA communication point for foreign company | Manages registration/listing data in FURLS |
Legal requirement | Mandatory per 21 CFR §807.40 | Mandatory for all establishments |
Location | Must be physically in US | Can be located anywhere (including abroad) |
Responsibilities | Receive/forward FDA communications, schedule inspections | Update establishment registration, device listing, submit annual renewals |
Can be same person | Yes | Yes (commonly same person for foreign companies) |
For international manufacturers: You need BOTH a US Agent AND an Official Correspondent. They can be the same person/entity, which simplifies management.
US Agent Requirements and Qualifications
FDA does not certify, license, or approve US Agents. Anyone meeting basic criteria can serve as your US Agent.
Mandatory requirements per 21 CFR §807.40:
1. Physical US presence
Must reside in OR maintain place of business in United States
Cannot use P.O. boxes, mail forwarding services, or answering services
Must have physical address where someone is present during business hours
2. Availability during US business hours
Agent (or designated team member) must be reachable during normal US business hours in practice.
FDA may call at any time during business hours with urgent matters
3. Ability to communicate in English
All FDA communications are in English
Agent must fluently communicate with both FDA and your company
4. Agreement to serve as agent
Must formally accept role via FDA's automated confirmation system
Has 10 business days to confirm after you designate them in FURLS
No formal qualifications required—but choose wisely:
FDA imposes no certification, licensing, or educational requirements for US Agents. However, choosing the right agent significantly impacts your compliance and FDA relationship.
Look for agents with:
Regulatory knowledge: Understanding of FDA device requirements, processes, timelines
Responsiveness: Track record of prompt communication (FDA may require same-day response)
Experience: History working with foreign manufacturers in your device category
Infrastructure: Established systems for receiving, tracking, forwarding FDA communications
Independence: No conflicts of interest with your business operations
Can Your US Distributor Be Your US Agent?
Yes, technically—but this often creates problems.
Many international manufacturers ask their US distributor or importer to serve as US Agent. While legally permissible, this arrangement carries significant risks.
Why distributors make poor US Agents:
Conflict of interest in FDA communications
If FDA contacts your agent about quality issues, compliance concerns, or potential enforcement actions, your distributor has business incentive to delay, minimize, or filter this information before forwarding to you.
Business relationship complications
If your distribution relationship sours, changing US Agents mid-relationship creates compliance gaps. Your distributor may not promptly confirm the new agent designation, leaving you unable to legally import devices.
Lack of regulatory expertise
Distributors excel at sales and logistics, not regulatory compliance. They may not understand the urgency or technical implications of FDA communications.
Divided attention
Your distributor's primary focus is selling your devices. Regulatory communication facilitation is secondary, leading to delayed responses when FDA contacts them.
Better approach: Independent regulatory consultant as US Agent
Most successful international manufacturers appoint an independent FDA regulatory consultant as US Agent. This provides:
✅ No business conflicts of interest
✅ Regulatory expertise to understand FDA communication context
✅ Dedicated focus on compliance (not sales)
✅ Continuity if you change distributors or market strategies
✅ Professional responsiveness to FDA inquiries
How to Designate a US Agent: Step-by-Step Process
Designating a US Agent happens through FDA's FURLS (FDA Unified Registration and Listing System) during Establishment Registration.
Timeline: Agent must confirm within 10 business days.
Step 1: Select your US Agent (before starting FDA registration)
Identify qualified person or entity
Negotiate agreement terms and annual fee
Obtain their complete information: full name, company name (if entity), physical address, phone, email, DUNS number (optional)
Step 2: Create FDA FURLS account
Go to: https://www.fda.gov/medical-devices/device-registration-and-listing/how-register-and-list
Create account with email address (this becomes your Official Correspondent login)
FDA assigns you an Owner/Operator number
Step 3: Complete Establishment Registration
Log into FURLS with your Owner/Operator credentials
Navigate to "Establishment Registration"
Enter your facility information (name, address, operations performed)
Critical: Enter US Agent information in designated section:
Agent's full name
Company name (required field even if individual)
Physical US address (no P.O. boxes)
Phone number
Email address
DUNS number (optional but recommended)
Step 4: Submit registration
Review all information for accuracy
Submit electronic registration
FDA immediately emails automated confirmation to your US Agent
Step 5: US Agent confirms role (within 10 business days)
Agent receives email from reglist@cdrh.fda.gov with subject "ACTION REQUIRED: U.S. Agent Assignment Notification"
Agent must click confirmation link in email
Agent electronically confirms agreement to serve as your US Agent
Critical: If agent doesn't confirm within 10 business days, FDA notifies you and registration is incomplete
Step 6: Registration complete
Once agent confirms, your Establishment Registration is active
You receive FDA registration number
You can now legally import devices (assuming all other requirements met)
Common mistakes that delay registration:
❌ Agent's email in spam folder
FDA's automated emails often trigger spam filters
Have your agent add reglist@cdrh.fda.gov to safe senders BEFORE you submit registration
❌ Using P.O. box or mail forwarding service
FDA rejects registrations with non-physical addresses
Must be actual building address where agent physically present
❌ Incomplete agent information
All fields must be complete in FURLS
Missing phone or company name causes rejection
❌ Agent doesn't respond within 10 days
You must re-submit with same or different agent
Creates delays in import clearance
How Much Does a U.S. Agent Cost?
U.S. Agent pricing is not set by FDA, it is a private market service. Fees vary based on whether the provider only acts as your U.S. Agent or bundles additional support like Official Correspondent work, DRLM registration assistance, and regulatory consulting.
Market-observed pricing (examples): providers publicly advertise annual fees from roughly $299/year on the low end to $1,000+/year for bundled services, with higher-priced packages when consulting and broader support are included.
Important: The FDA annual establishment registration fee is separate and paid directly to FDA, regardless of who serves as your U.S. Agent.
Common fee structures (how providers usually package it)
U.S. Agent only: forwards FDA communications and helps coordinate inspection scheduling when requested.
U.S. Agent plus registration support: may also act as Official Correspondent and help with DRLM registration and listing actions.
U.S. Agent plus consulting: adds interpretation and response planning for FDA communications, and other regulatory support. (Market practice, not an FDA requirement.)
Best practice
Negotiate an all-inclusive annual fee that clearly states what is included and excludes surprise charges for routine communications.
Complizen tip: Treat U.S. Agent management like a compliance workflow, not an email thread. In Complizen, you can track registration and listing readiness, store your agent confirmation evidence, and keep an audit-friendly record of what was submitted and when, so your team and importer are always using the current status.
When to Appoint Your U.S. Agent
Appoint your U.S. Agent early, because foreign establishment registration requires one.
Do not confuse U.S. Agent appointment with premarket authorization timing. You must still meet all applicable requirements before you commercially import and distribute a device in the U.S.
Practical sequencing:
Early: Identify and designate the U.S. Agent so you can complete foreign establishment registration steps without last-minute delays.
Before commercial import: Ensure your establishment registration and device listing are compliant, and ensure you have any required premarket authorization for your device.
Confirmation timing: Your U.S. Agent must confirm the designation within 10 business days in FDA’s system, otherwise the system cancels the receipt code and removes the agent designation.
What Happens If You Do Not Have a U.S. Agent?
If your foreign establishment cannot complete compliant registration and listing, you risk being unable to legally import devices for commercial distribution.
Under 21 CFR 807.40(c), a device generally may not be imported or offered for import unless it is listed and manufactured at a registered foreign establishment, with an exception for investigational use under Part 812.
Safer way to say the consequence: shipments may be detained or refused when registration and listing are not compliant. (Avoid absolute “automatic detention” and the “90 days” claim, those are not reliably citable from FDA sources.)
If Your U.S. Agent Stops Responding
If the U.S. Agent’s information changes or the relationship ends, update your U.S. Agent information promptly. FDA’s rules require reporting changes to the U.S. Agent’s name, address, or phone number within 10 business days.
Immediate steps:
Designate a new U.S. Agent in DRLM.
Ensure the new agent confirms within the 10-business-day window.
Keep your importer and internal team aligned on the updated registration and listing status.
How to Change Your U.S. Agent
Changing U.S. Agents is done through FDA’s registration and listing system. The key variable is how quickly the new agent confirms, up to the 10 business day confirmation window.
There is no separate FDA fee just to change agents, but normal annual establishment registration fees still apply.
Complizen tip: Log the change as a tracked compliance event, store the confirmation proof, and keep the “current U.S. Agent” as a single source of truth across your team, distributors, and logistics partners.
US Agent Agreement: What Should It Include?
Always formalize your US Agent relationship with written agreement.
FDA doesn't require a formal contract, but professional US Agents insist on one. A proper agreement protects both parties and clarifies expectations.
Essential elements of US Agent agreement:
1. Scope of services
Specific responsibilities agent will perform
Explicitly state what's NOT included (e.g., regulatory submissions, adverse event reporting)
Communication protocols and response time expectations
2. Term and termination
Annual term (typically 12 months with auto-renewal)
Notice period for termination (30-60 days typical)
Transition assistance if you change agents
3. Fees and payment terms
Annual agent fee amount
Payment schedule (annual prepay vs. quarterly)
Additional fees for extra services (if any)
Fee increases for subsequent years
4. Confidentiality
Agent's obligation to protect your proprietary information
Exception: Agent may be legally required to disclose information to FDA
Requirement to notify you if FDA requests confidential information
5. Liability and indemnification
Agent's limitation of liability (typically limited to annual fee)
Your agreement not to hold agent responsible for FDA enforcement actions
Mutual indemnification for breaches of agreement
6. FDA communication protocols
How agent will forward FDA communications (email, phone, portal)
Timeframe for forwarding (same business day typical)
Escalation procedures for urgent FDA matters
7. Contact information updates
Agent's responsibility to maintain current information in FURLS
Your responsibility to notify agent of company changes
10-business-day update requirement per FDA regulations
8. Non-solicitation
Agent agrees not to solicit your customers, suppliers, or employees
Protection against agent becoming competitor or distributor
Common US Agent Mistakes International Manufacturers Make
1. Appointing distributor as US Agent without considering conflicts
Problem: Distributor filters FDA communications based on business interests
Solution: Use independent regulatory consultant as agent
2. Selecting cheapest agent without evaluating responsiveness
Problem: Agent doesn't respond promptly to FDA inquiries, causing compliance issues
Solution: Evaluate agent's track record, not just price
3. Failing to keep agent informed of company changes
Problem: Agent lacks context when FDA contacts them, provides incomplete/incorrect information
Solution: Quarterly updates to agent on device changes, new products, facility modifications
4. Not verifying agent confirmed designation in FURLS
Problem: Assume registration complete, but agent never confirmed, registration invalid
Solution: Check FURLS portal to confirm agent listed as "confirmed" status
5. Using agent's address as establishment address
Problem: FDA expects establishment address to be manufacturing facility, not agent
Solution: Use actual foreign manufacturing facility address in registration
6. Expecting agent to handle regulatory submissions
Problem: Agent role doesn't include 510(k), PMA, or other submissions
Solution: Hire separate regulatory consultant for submissions, or use agent who offers bundled services
7. Not updating agent contact information when they move offices
Problem: FDA cannot reach agent, communications delayed or lost
Solution: Monitor agent's contact information, require them to notify you of any changes
8. Designating individual agent without backup contact
Problem: If individual unavailable (vacation, illness), FDA communications delayed
Solution: Ensure agent has team/backup system for 100% coverage during business hours
US Agent for Component Manufacturers and Specification Developers
Even if you don't manufacture finished devices, you may need a US Agent.
Per 21 CFR §807.3(b), establishment registration is required for:
"Any person who initiates specifications for a device that is to be manufactured at another location"
When component manufacturers need US Agent:
You manufacture components that BECOME part of finished medical devices
Your components are incorporated into devices sold in US
Per 21 CFR §807.40, you're engaged in "compounding" devices
Example: Manufacturer of printed circuit boards used in diagnostic devices
Your components meet FDA's definition of "device"
Component has intended medical use on its own
Component is sold directly to US hospitals/clinics
Example: Replacement batteries for implantable pacemakers
When specification developers need US Agent:
You design devices manufactured by contract manufacturers
You create technical specifications, drawings, formulas
Contract manufacturer builds device to your specs
You market device under your brand in US
Example: European design firm creates specifications for surgical instruments, contracts Asian manufacturer to produce them, sells in US under European company brand.
Note: If you ONLY provide engineering consulting services and don't own device specification or brand, you likely don't need registration/agent.
US Agent Requirements Under New QMSR (Quality Management System Regulation)
FDA's Quality Management System Regulation (QMSR) effective February 2, 2026 does NOT change US Agent requirements.
The QMSR (21 CFR Part 820 as amended) incorporates ISO 13485:2016 by reference but maintains existing US Agent requirements from 21 CFR Part 807.
What QMSR changes:
✅ Quality systems must comply with ISO 13485:2016 (already common for international manufacturers with CE Mark)
✅ FDA inspection approach (new compliance program 7382.850 replaces QSIT)
✅ Documentation standards (alignment with ISO 13485 terminology)
What QMSR does NOT change:
❌ US Agent requirement remains mandatory for all foreign establishments
❌ US Agent role and responsibilities unchanged
❌ Establishment registration process unchanged
❌ US Agent appointment timing unchanged
For international manufacturers: QMSR actually simplifies compliance if you already have ISO 13485:2016 certification for CE Mark. Your existing QMS largely satisfies FDA requirements, but US Agent is still separately required.
How US Agent Fits Into Your Overall FDA Market Entry Strategy
US Agent appointment is one piece of comprehensive FDA market entry plan.
Complete FDA market entry sequence for international manufacturers:
Phase 1: Market research and pathway determination (Months 1-2)
Determine FDA device classification
Identify appropriate regulatory pathway (510(k), De Novo, PMA)
Research predicate devices (for 510(k) pathway)
Budget FDA clearance costs and timeline
Phase 2: Quality system preparation (Months 2-4)
Ensure ISO 13485:2016 certification current (satisfies QMSR)
Align QMS documentation with FDA terminology
Prepare for potential FDA inspection of foreign facility
Document design controls per 21 CFR Part 820.30
Phase 3: Regulatory submission preparation (Months 3-6)
Compile technical documentation
Prepare 510(k) submission (or PMA/De Novo)
Consider Pre-Sub meeting with FDA (highly recommended for international manufacturers)
Engage regulatory consultant if needed
Phase 4: Regulatory submission (Month 6-7)
Submit 510(k)/PMA/De Novo to FDA
Respond to Additional Information requests
Maintain communication with FDA reviewer
Phase 5: Clearance/approval and post-clearance setup (Month 7-15)
Receive FDA clearance/approval
→ Appoint US Agent (this step)
Complete Establishment Registration via FURLS
List device with clearance/approval number
Set up Medical Device Reporting (MDR) system for adverse events
Phase 6: Import logistics and market entry (Month 15+)
Ensure labeling complies with 21 CFR Part 801
Coordinate with US distributor/importer
First commercial import (CBP verifies registration)
Begin US sales
US Agent appointment happens AFTER regulatory clearance but BEFORE first import. Plan ahead by identifying agent candidates during submission phase, so you can move quickly once cleared.
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Frequently Asked Questions
Do I need a U.S. Agent if I only sell through a U.S. distributor?
Usually, yes. If your foreign establishment must register with FDA, you must designate a U.S. Agent even if a distributor handles import.
Can one U.S. Agent represent multiple foreign companies?
Yes. FDA does not set a numeric limit, but the agent must be able to relay communications and support inspection coordination reliably.
Can I have multiple U.S. Agents for one establishment?
No. Each foreign establishment designates one U.S. Agent. If you have multiple establishments, each can designate its own agent.
What if my U.S. Agent stops serving?
Replace them fast. FDA requires reporting changes to the agent’s name, address, or phone within 10 business days, and the new agent must confirm the assignment in FDA’s system.
Does a U.S. Agent need training or certification?
No. FDA does not require certification or licensing for U.S. Agents.
Can my U.S. Agent represent me at FDA meetings or inspections?
The U.S. Agent role is mainly communications and inspection coordination. For meeting representation or inspection support, hire a regulatory consultant, it can be the same firm under a separate engagement.
How do I confirm FDA has accepted my U.S. Agent?
FDA sends an automated confirmation request to the agent. You can verify acceptance inside DRLM.
If my agent mishandles an FDA message, who is responsible?
Your company is. Your agreement should specify exactly who receives FDA communications and how quickly they’re escalated.
Can a law firm or U.S. subsidiary be the U.S. Agent?
Yes, if it meets the U.S. Agent requirements, including having a real U.S. place of business.
How long does the designation last?
As long as your establishment registration is kept current and the agent continues to serve with up-to-date contact info. Registration is annual.
