IP agreementsAssignmentLicensing

Intellectual property agreement types

By Ipiry TeamPublished August 24, 20267 min read

Short answer

IP agreements divide by what happens to ownership. An assignment transfers it permanently. A licence grants permission while ownership stays put. An NDA protects information without moving any rights. Joint development allocates ownership of things not yet created. Employment and consulting agreements decide who owns work product before it exists. Choosing the wrong type is the common failure, and the second is leaving future creations unaddressed.

An intellectual property agreement is chosen by asking one question first: what happens to ownership.

Three answers. It moves permanently, it stays where it is while someone gets permission, or it does not move and nobody gets rights.

Everything else follows from that. Get the category wrong and the drafting quality does not matter.

The second most common failure is silence about the future — agreements written around what exists at signing, saying nothing about improvements, continuations, or work produced next year.

The types

Agreement	Ownership
Assignment	Transfers permanently
Licence	Stays put; permission granted
NDA	Does not move; no rights granted
Joint development	Allocated for things not yet created
Employment IP	Pre-assigns future work product
Consulting / contractor	Pre-assigns, or fails to
Settlement	Resolves a dispute, may licence or assign
Coexistence	Defines lanes without transferring

Assignment

Feature	Detail
Effect	Permanent transfer
Assignor keeps	Nothing, unless expressly reserved
Maintenance fees	Become the buyer's
Enforcement	Buyer's
Validity risk	Buyer's
Recording	At the USPTO, and each foreign office separately
Continuations	Must be addressed expressly

An assignment ends every ongoing obligation for the seller. That is its main practical attraction against licensing, alongside the single payment.

Reserve a licence back if you still need to practise it. Without an express reservation, an assignor has no right to use its own former invention.

Address the family explicitly. Continuations, divisionals and foreign counterparts should be listed or captured by clear language, or a buyer may acquire one patent from a family of six. See patent assignment.

Licence

Feature	Detail
Effect	Permission to use
Ownership	Stays with the licensor
Maintenance fees	Remain the licensor's
Types	Non-exclusive, sole, exclusive
Exclusive	Normally excludes the licensor too
Field and territory	Can be limited, and should be
Revenue	Ongoing, requires monitoring

Exclusive normally excludes the licensor. A licensor intending to keep practising needs a sole licence or an express reservation.

Field-of-use limits turn one asset into several. A patent licensed exclusively for one application remains licensable for others. See patent license agreement.

NDA

Protects	Does not
Confidential information	Grant any IP rights
Against disclosure and misuse	Prevent independent development
For a defined term	Create a right to exclude
Where properly marked and handled	Survive public disclosure of the information

An NDA is not protection for an invention. It restrains a specific counterparty and does nothing about anyone else.

Public disclosure destroys what it protects. Once information is public, no confidentiality obligation can restore it, and in most countries public disclosure before filing forfeits patent rights entirely.

Sign one before disclosing, not after. A disclosure made before signing is frequently outside the agreement's scope.

Employment and contractor agreements

	Employees	Contractors
Default ownership	Varies by agreement and jurisdiction	Frequently the contractor
Express assignment needed	Yes	Yes, and more urgently
Present assignment language	Recommended	Recommended
Scope limits	Some states restrict reach	Contractual
Common failure	Clause missing or narrow	No clause at all

Contractor gaps are the most common ownership defect found in diligence. Paying for work does not automatically buy the IP in it.

Use present-tense assignment language. "Hereby assigns" operates immediately; "agrees to assign" creates only an obligation, and the difference has decided real cases.

Capture future work. An agreement listing what exists at signing leaves everything after it unaddressed.

Joint development

Without an agreement	With one
Joint inventorship rules apply	Allocation as agreed
Each joint owner may practise the whole invention	As defined
Each may license without accounting to the others	As defined
All must join to enforce, generally	As defined
Background IP unaddressed	Defined

The default rules surprise people. A joint owner can generally license the entire invention to your competitor and keep the money.

Address background IP separately from foreground. What each party brought in should not become jointly owned by participating.

Which one fits

Situation	Agreement
Selling a patent outright	Assignment
Letting someone use it, keeping ownership	Licence
Exploring a deal, sharing information	NDA first
Hiring an engineer	Employment IP agreement
Engaging an agency or freelancer	Contractor agreement with present assignment
Building something jointly	Joint development agreement
Ending a dispute	Settlement, often with a licence
Two parties, overlapping rights	Coexistence

NDA first, always, where information moves before terms are agreed.

Worked example: one project, four agreements

A company develops a sensor with an outside firm and licences the result.

Stage	Agreement	Addresses
1. Initial discussions	NDA	Information, not rights
2. Engaging the firm	Development agreement	Who owns the output
3. Engineers hired	Employment IP agreements	Future inventions
4. Commercialising	Exclusive licence, one field	Revenue, other fields reserved

What each one prevented

Missing	Consequence
No NDA	Disclosure before filing — rights forfeited in most countries
No development agreement	The firm may own the invention it built
No employment clauses	Individual engineers may retain rights
Unlimited licence field	Other applications given away for one rate

All four failures are recoverable only by negotiation afterwards, at whatever price the other party names.

The clauses that fail quietly

Clause	Failure
"All IP relating to"	Ambiguous scope; list by number
Silence on continuations	Family not transferred
"Agrees to assign"	Obligation, not a transfer
Unrecorded assignment	No visible chain
Silence on improvements	Later work unaddressed
Free assignability	Rights can reach a competitor
Warranty of validity	Unpriceable risk accepted
No field limit	Other markets given away

Warranting validity is the one to refuse. Nobody can guarantee a patent survives challenge, and accepting that risk transfers something that cannot be priced.

Recording matters


Recording makes a transfer effective	No
Unrecorded assignment defeated by a later recording purchaser	Possible
Visible for diligence	Only if recorded
Foreign rights	Recorded in each national office
Effect of a gap	Stops a sale

Record promptly, in every jurisdiction. A gap in the recorded chain is discovered by buyers first and takes longer to fix than to prevent. See assignment search.

Ongoing costs sit with the owner

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

Licensing keeps that cost with the licensor; assignment moves it. That difference is frequently larger than it appears when a royalty stream is thin.

58.6% of US utility patents are abandoned before term — see the patent survival curve — often because the ongoing cost outlived the reason for holding.

Intellectual property agreement: the checklist

Decide what happens to ownership first. Everything else follows.
Sign an NDA before disclosing, not after.
Use present-tense assignment language — "hereby assigns", not "agrees to assign".
Get contractor assignments in writing. Paying for work does not buy the IP.
Address future creations, not only what exists at signing.
List patents by number, and capture continuations and foreign counterparts.
Limit licence field and territory unless there is a reason not to.
Reserve a licence back if you assign something you still use.
Refuse to warrant validity or non-infringement when granting rights.
Record every assignment promptly, in every jurisdiction where rights exist.

Common questions

What are the main types of IP agreement?

Assignment, licence, non-disclosure agreement, joint development agreement, employment IP agreement, consulting or contractor agreement, and settlement or coexistence agreements. They differ mainly in what happens to ownership.

What is the difference between an assignment and a licence?

An assignment transfers ownership permanently, ending the assignor's rights and obligations. A licence grants permission to use while ownership stays with the licensor, who continues to bear maintenance fees, enforcement and validity risk.

Does an NDA protect my invention?

It protects confidential information from disclosure and misuse, which is not the same as owning rights. An NDA does not stop independent development and does not create any right to exclude, so it complements patent protection rather than substituting for it.

Who owns inventions made by employees?

It depends on the employment agreement and the jurisdiction. Many agreements assign work-related inventions to the employer, but the scope varies and some states limit how far such clauses reach. Without a written agreement, ownership can be genuinely unclear.

Do I need an IP agreement with contractors?

Yes, and the risk is higher than with employees. Absent an express assignment, a contractor may own what they create even though you paid for it. This is one of the most common causes of ownership gaps found during diligence.

What does a joint development agreement do?

It allocates ownership and rights in things that do not exist yet. Without one, joint inventorship rules apply, under which each joint owner can generally license and practise the whole invention without accounting to the others.

Should assignments be recorded?

Yes. Recording is not what makes a transfer effective, but an unrecorded assignment can be defeated by a later purchaser who records, and it leaves no visible chain for anyone doing diligence, which stops sales.

What is a coexistence agreement?

An agreement between parties with potentially conflicting rights to operate in defined lanes without disputing each other. More common in trademarks than patents, though patent settlements can perform a similar function.

What is the most common mistake?

Failing to address future creations. Agreements written around what exists at signing frequently say nothing about continuations, improvements, or work produced after the date, and those gaps surface years later during a transaction.

Can one agreement cover several IP types?

Yes, and many do. But patents, trademarks, copyrights and trade secrets have different durations and formalities, so a single blended clause frequently fits none of them well. Address each type explicitly.

Do IP agreements need to be recorded anywhere else?

Patent assignments are recorded at the USPTO for US rights, and separately in each foreign office for foreign rights. Licences are often not recorded at all, which is why an exclusive licence can restrict an owner invisibly.

When should a lawyer draft it?

For anything transferring ownership or granting exclusive rights. Templates handle routine NDAs adequately, but assignments and exclusive licences have consequences that are permanent and expensive to unwind.

Patent license agreement: from negotiation to termination

The patent licence agreement as a live relationship — negotiating sequence, execution formalities, recording, royalty administration, audits, disputes and how it ends.

Patent assignment: transferring ownership properly

What a patent assignment is, what the document must contain, why recording within three months matters, and the chain-of-title defects that surface years later in diligence.

What is an IP license?

The IP licence as a document — every clause that matters, what each one does, the types of licence, and the terms that quietly decide how much the agreement is worth.

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