Counterfeit disputes are usually won with organized evidence and an early filing, not a heated message to the seller. Save the listing, order record, packaging, and clear photos. Then use the marketplace or payment service's own dispute channel and describe the exact mismatch.

The deadline depends on the route. PayPal, eBay, Amazon, AliExpress, and your card issuer do not share one clock, and a marketplace guarantee is not the same as a legal remedy. This guide is for U.S. consumers. Your order page and current policy control.

What controls a counterfeit dispute?

First identify where the transaction lives. A purchase on eBay might also involve PayPal or a card, but those are separate decisions, separate evidence requests, and separate clocks.

A platform policy controls the platform case. Your bank, card issuer, or payment provider may apply different rules. State law may provide additional rights, but this article does not determine them for a particular state or transaction.

Red flags before you buy

One odd detail can have an innocent explanation. Several together deserve a pause.

• The price is far below the normal price without a credible reason.
• Product photos look copied, blurred, or inconsistent across the listing.
• The brand name, model number, color, dimensions, or technical specifications do not line up.
• Serial, batch, or QR details are missing, repeated, or fail a brand's available verification process.
• The seller avoids clear questions about sourcing, authenticity, warranty, or returns.
• The seller pushes you to pay or communicate outside the marketplace.
• The return address, shipping origin, seller identity, or packaging does not match the listing.

Ratings can help you screen a seller. They don't authenticate an individual item.

What to do as soon as the item arrives

Act before the listing disappears or the dispute window closes.

1. Save the package. Photograph the shipping label, outer packaging, seals, inserts, and any visible damage. Keep the tracking record.
2. Capture the listing. Screenshot the title, photos, description, condition, seller name, promised features, price, and return terms. A live listing can change.
3. Stop using a suspicious product. Do not apply, swallow, plug in, charge, or test an item that could create a safety risk. Keep it away from children and pets, and preserve it as evidence.
4. Seek a useful authentication opinion. Contact the brand or a qualified independent authenticator if one is available. Ask for a written finding that explains the method, date, and visible reasons.
5. Message the seller inside the platform. State the specific mismatch and request the platform's refund or return instructions. Do not close a case because of a promise made in private chat.

A serial lookup can support your case, but it is not conclusive by itself. Counterfeiters can copy identifying numbers.

Evidence that makes the claim clearer

Strong evidence tells a simple story: the listing promised one thing, the delivered item shows another, and the seller did not fix it.

To be honest, a short screen recording of the listing can be more useful than a long paragraph about how suspicious the seller felt. Keep the original files and note when you took each photo.

Platform-by-platform counterfeit dispute steps

PayPal

PayPal's U.S. Purchase Protection terms say a dispute must be opened within 30 days of delivery or fulfillment, or within 180 days of the payment date, whichever comes first. That is a deadline, not a promise of coverage. The purchase must still meet the program's eligibility requirements.

Open the transaction in the Resolution Center and choose the most accurate reason available. If the item materially differs from the listing, use a significantly-not-as-described category if PayPal presents it. Explain the observable mismatch, attach photos or a written assessment, and keep the explanation factual.

If the seller does not resolve the dispute, follow PayPal's process to escalate it. Do not let a seller's promise push you past the deadline shown in your account. If your PayPal payment was funded by a card, remember that the card issuer has a separate process and may ask what happened with PayPal.

eBay

eBay's Money Back Guarantee policy uses the estimated or actual delivery or collection date when setting reporting windows. The policy lists a latest point of 30 calendar days after that date for covered reports, so check the transaction page rather than relying on memory.

Report the item through the order and select the closest accurate issue, such as an item that is not as described. eBay says the seller generally has three business days to respond. If the seller does not resolve the problem, ask eBay to step in through the case.

Return the item only as eBay directs. Use the provided label when one is supplied, retain tracking, and follow any signature requirement. For an item with a total cost of $750 or more, eBay says signature confirmation is required. Its return guidance says refunds are typically available within five to seven business days after the returned item reaches the seller.

Amazon

For a purchase from an Amazon third-party seller, start with the order's seller-contact option. Amazon's A-to-z Guarantee guidance describes a materially different item, including a significant misrepresentation of its condition or details, as a relevant type of problem. It also says qualifying protection can cover up to $2,500 of the purchase price, including shipping charges.

Those conditions do not make approval automatic. Attach the order record, listing screenshots, photographs, seller messages, and any authentication evidence. If the seller does not resolve the problem, use the A-to-z claim route shown in the order rather than opening a vague support request.

Do not confuse a standard return window with A-to-z eligibility. The live claim screen and the policy attached to your order are the safer sources for the applicable deadline.

AliExpress

Open the order and use its dispute tool while the displayed window is still open. AliExpress's dispute support material describes disputes as the formal route for products that do not match the listing, arrive damaged, or fail to arrive.

Public AliExpress guidance shows different general timeframes in different places, including 15-day and 30-day examples. Do not copy a generic number from a blog or search result. Use the deadline shown on your order for your country and issue.

Upload clear photos or video, the listing, seller messages, and tracking details. Keep every important message on AliExpress. If the seller offers a partial refund, accept it only if it genuinely solves the problem, and do not close the dispute before the agreed refund is actually posted.

A simple message to the seller

Keep the first message short. Describe facts that another person can verify.

Order [number] arrived on [date]. The listing states [specific claim], but the item shows [specific mismatch]. I believe it may not be authentic. Please provide refund and return instructions through this platform. I have attached [photos or written authentication]. I will keep the item and packaging available for review.

Avoid insults, threats, or a demand for payment outside the platform. A calm message creates a useful record.

If the platform rejects the claim

Read the decision closely before filing again. The reason may identify missing evidence, a missed deadline, a return problem, or an eligibility issue.

1. Save the decision and appeal deadline. Respond to the stated reason. Add the missing comparison, authentication report, delivery proof, or seller message instead of repeating the accusation.
2. Use the platform's appeal or step-in route. A duplicate case can create confusion. Keep the original case number and submit one organized response.
3. Contact the payment provider quickly. A credit or debit card dispute is separate from a marketplace guarantee. Tell the issuer that you authorized the purchase but received goods that may not match the description. Do not report the transaction as unauthorized unless that is true.
4. Get stronger evidence for an expensive item. A dated written opinion from a qualified expert may answer the platform's specific concern. Ask whether the platform wants the item returned before sending anything.
5. Handle safety concerns separately. Stop using a questionable cosmetic, supplement, battery, charger, or medical product. Keep records and contact the relevant brand or safety agency if the product could harm someone.

Tell each provider about any other open case or refund. Do not seek two refunds for the same loss.

What does not prove a counterfeit by itself

A low price is a warning sign, not proof. Neither is a seller's country, a single loose thread, unusual packaging, or a low review score. A valid serial number can still be copied, while a damaged box can have an innocent shipping explanation.

Focus on the promised product and the delivered product. Write, "The listing promised model X, but the label and item show model Y," rather than making a broad accusation you cannot support.

Start now: open the order page, save the displayed deadline, and put the receipt, screenshots, photos, messages, and authentication evidence in one folder. Then file through the correct platform before contacting anyone outside it.