BrokerageContingency feesSelling patents

Patent brokers without upfront fees

By Ipiry TeamPublished August 25, 20267 min read

Short answer

A contingency broker takes a percentage of the sale price and charges nothing upfront, which aligns their incentive with yours but means they select hard — most patents offered are declined because the expected commission does not justify the work. No upfront fee is not the same as no cost, since some charge for valuation, marketing or documentation separately. Verify what is genuinely free, what the commission covers, and whether they have completed comparable sales.

Patent brokers without upfront fees work on contingency — a percentage of the sale price, nothing in advance.

That aligns their incentive with yours. They are paid only if you are.

It also means they select hard. Unpaid effort on an asset that does not sell is a loss, so most patents offered get declined.

Which makes "will you take this on" the first real valuation you receive, and it is free.

The models

Model	You pay	Broker's incentive
Contingency / success fee	Nothing upfront, % of sale	Aligned — paid on sale only
Retainer plus success fee	Fee plus %	Partly aligned
Fee-for-service	Fixed fees	Paid regardless of outcome
Invention promotion	Upfront fees	Paid by you, not by a buyer

The last row is a different business. A broker sells patents to buyers; a promotion service sells services to inventors.

Mixed models are legitimate. A retainer covering marketing materials with a reduced commission is a real structure, provided it is stated plainly.

What "no upfront fee" may still exclude

Item	Often billed separately
Valuation report	Sometimes
Marketing materials	Sometimes
Claim charts or evidence of use	Frequently
Prosecution or continuation work	Yes
Legal documentation	Usually
Maintenance fees during the process	Always yours
Foreign annuities	Yours

Maintenance fees stay with you throughout. A sale process running across a fee deadline means paying it, and a lapsed patent mid-process is worth nothing.

Fee	Due after grant	Large	Small	Micro
First	3.5 years	$2,150	$860	$430
Second	7.5 years	$4,040	$1,616	$808
Third	11.5 years	$8,280	$3,312	$1,656
Total		$14,470	$5,788	$2,894

Why patents get declined

Reason	Detail
Nobody practises the claims	The largest single reason
Short remaining term	Under 3 years is very difficult
Ownership chain gaps	Blocking, not discounting
Narrow claims easily designed around	No buyer motivation
Not in force	58.6% of US utility patents are abandoned
No documented evidence of use	Speculative
Single patent, no family	Less leverage

Ipiry Patent Survival Curve v1.0	Rate
Survive the 3.5-year fee (2022 cohort)	85.8%
Survive the 7.5-year fee (2018 cohort)	64.6%
Reach full term (2014 cohort)	41.4%
Abandoned before full term	58.6%

Computed from 27,273,654 USPTO maintenance fee records covering 8,262,336 US utility patents — see the patent survival curve.

A decline is information. It usually means the asset would not clear diligence, and finding that out for free is worth having.

Questions before signing

Ask	Weak answer
What does the commission cover?	Vague
What is billed separately?	"It depends"
Have you completed comparable sales?	No examples
How long is the exclusivity period?	Open-ended
What if I find a buyer myself?	Commission on everything, forever
Who are your typical buyers?	Cannot say
How is my confidential information handled?	No NDA offered
Do you cover the foreign family?	Unclear
What happens if it does not sell?	No exit

Open-ended exclusivity is the term to fix. A defined period with a clear end lets you try another route if nothing happens.

Carve-outs for buyers you introduce are negotiable and worth raising.

Distinguishing a promotion service

Federal law requires invention promoters to disclose under 35 U.S.C. §297, in writing, before you contract:

Total customers in the past five years
How many received a net financial profit
How many received licence agreements
Any other trading names

Red flag	Meaning
They contacted you first	Enthusiasm preceded evaluation
A paid evaluation returns positive	Positive evaluations are the product
Will not give the §297 numbers	The numbers are bad
Pressure to decide quickly	Filing deadlines are real; sales deadlines are not
Large upfront fee	Submission is cheap; the fee is the business
No named registered attorney or agent	Nobody accountable

Read the net-profit figure, not the customer count. See submit invention ideas for royalties.

Preparing before you approach anyone

Step	Why	Cost
1. Verify in force in Patent Center	Dead patents do not sell	Free
2. Check the recorded chain	Gaps stop transactions	Free
3. Confirm no unreleased security interest	Same	Free
4. Calculate remaining term correctly	Continuations run from the parent	Free
5. Search for products practising the claims	The value driver	Free to screen
6. Draft a claim chart on the best candidate	Evidence	Time
7. Gather file histories and family details	Diligence pack	Free

Step five is what changes the answer. A documented chart against a shipping product is the largest single factor in what a buyer pays. See patent infringement search.

Steps one to five are free and they are the same checks a broker will run.

Worked example: two approaches

Two owners with similar patents, both approaching contingency brokers.

	Owner A	Owner B
In-force verified	No	Yes
Chain of title checked	No	Yes — gap found and fixed
Remaining term	4 years, miscalculated as 11	9 years, verified
Evidence of use	None	Chart against 2 shipping products
Family	US only	US + EP + CN
Timing	6 weeks before a fee deadline	14 months before
Outcome	Declined by three brokers	Engaged, sold

Owner A's term miscalculation was the continuation trap — the patent was filed as a continuation of a much earlier parent, so it expired seven years sooner than the filing date suggested.

Owner B's chain gap was found and fixed before it mattered. Discovered during diligence instead, it would have stalled or killed the deal.

Six weeks is not enough time. Buyer identification, diligence and documentation take months, and a compressed timeline reduces the price even where a buyer exists.

Timing

Start	Prospects
12+ months before a fee deadline	Full process possible
6 months	Workable, compressed
3 months	Difficult
6 weeks	Very unlikely
After the grace period closes	Worth nothing

Run a portfolio review annually against eighteen months of deadlines, so selling remains an option rather than a missed one. See patent portfolio management.

What the engagement should say

Term	Why
Commission percentage and base	Gross or net of what
Exclusivity period, with an end date	Not open-ended
Carve-outs for introduced buyers	Negotiable
Tail period after termination	How long commission survives
What is billed separately	Avoid surprises
Confidentiality	Before any disclosure
Whether foreign members are included	Scope

The tail period catches people. A commission surviving twelve months after termination is normal; one surviving indefinitely is not.

When to sell directly

Situation	Direct sale viable
You already know the buyer	Yes
A competitor has approached you	Yes
A licensee wants ownership	Yes
No idea who would want it	Broker adds most here
Complex family across jurisdictions	Broker

Buyer access is what you are paying for. Where you already have it, the commission buys process rather than reach.

Patent brokers without upfront fees: the checklist

Understand contingency means selection. Most patents offered are declined.
Treat a decline as free diagnostic information.
Ask what the commission covers and what is billed separately.
Bound the exclusivity period. Never open-ended.
Negotiate carve-outs for buyers you introduce.
Demand the §297 disclosure from anyone charging you upfront.
Verify in-force status and the recorded chain yourself first. Both free.
Calculate remaining term from the earliest parent in the family.
Build a claim chart before approaching anyone. It is the value driver.
Start twelve months before a fee deadline, not six weeks.

Common questions

Do patent brokers charge upfront fees?

Some do and some do not. Contingency brokers take a percentage of the sale price and charge nothing in advance. Others charge for valuation, marketing materials or listing, which can be legitimate but should be identified clearly before you commit.

What commission do contingency brokers take?

It varies widely with the asset and the work involved, and is negotiated per engagement. What matters more than the headline percentage is what the commission covers and whether anything is billed separately on top of it.

Why would a broker decline my patent?

Because contingency only pays on a sale, so they select for patents likely to sell. Short remaining term, no evidence anyone practises the claims, ownership gaps, or a narrow claim nobody would infringe all make a sale unlikely.

Is no upfront fee always better?

Not necessarily. Contingency aligns incentives but means the broker chooses which assets to work on, and a patent that does not clear their threshold gets no attention. A paid engagement can make sense where you need marketing to a specific buyer.

How do I tell a broker from an invention promotion service?

A broker sells patents to buyers and is paid from the proceeds. An invention promotion service sells services to inventors and is paid by you. Federal law requires promoters to disclose how many customers made a net financial profit.

What should I ask before signing?

What the commission covers, what is billed separately, how long the exclusivity period runs, what happens if you find a buyer yourself, whether they have completed comparable sales, and how they will handle your confidential information.

Should I grant exclusivity?

Usually yes, for a defined period, since a broker investing unpaid effort needs protection from being cut out. Keep the period bounded and check whether a sale to a buyer you introduced still triggers commission.

What makes a patent saleable?

Evidence the claims read on products in the market, verified in-force status, clean recorded ownership, and meaningful remaining term. Those four determine most outcomes, and a patent failing any one of them is difficult to sell.

How long does a sale take?

Months rather than weeks. Buyer identification, diligence and negotiation all take time, which is why starting before a maintenance fee deadline matters — a patent sold before the deadline is worth something and afterwards is worth nothing.

Can I sell a patent myself?

Yes, particularly where you already know who would want it. The broker's value is buyer access and process, so where you have the first and can manage the second, a direct approach is viable.

What if my patent is close to a fee deadline?

Start immediately and say so. Some buyers will transact quickly where the asset is clear, but the timeline compresses everything, and paying the fee to preserve the option is frequently cheaper than losing the asset.

Do brokers handle foreign family members?

It depends on the broker. Foreign counterparts add value and complexity, and assignments must be recorded separately in each jurisdiction. Confirm whether the engagement covers the whole family or the US member only.

Patent brokers: what they do and what they cost

What a patent broker actually does, how commissions and minimums work, why most small holders are turned away, and how to evaluate a broker before signing an exclusive mandate.

How to sell my patent

The steps to sell a patent, what buyers ask for at diligence, how the assignment works, what brokers charge, and why the maintenance fee deadline is the deadline that matters.

Submit invention ideas for royalties: how it really works

How company idea-submission programmes work, what the waivers actually say, which firms genuinely pay royalties, and how to tell a real programme from a fee-extraction business.

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