Patent Ownership
Co-Ownership
Patent co-ownership is easier to stumble into than to manage. US § 262 lets each co-owner license independently — including to your competitors — without sharing royalties or asking your permission.
How does patent co-ownership arise and who qualifies as a co-owner?
Patent co-ownership arises from several distinct legal pathways.
Co-inventorship
- The most common source
- When two or more individuals jointly conceive the claimed invention, each becomes a co-inventor
- US patents must name all inventors who contributed to the conception of at least one claim
- Pannu v. Iolab (Fed. Cir. 1998): each co-inventor must (1) contribute to the conception of at least one claim
- (2) make a significant contribution to the claimed invention
- (3) more than explain well-known concepts or prior art
- Since inventorship follows employers (through employment agreements), co-inventors from different organizations create co-ownership across organizations
Assignment to Multiple Parties
- A patent owner can assign a fractional undivided interest to another party
- This creates co-ownership by contract rather than inventorship
- Example: Company A owns a patent
- Acquires Company B
- In the acquisition, Company A assigns 50% interest to Company B's former owners as part of settlement
Result of Joint Development without IP Agreement
- The most problematic source
- Two companies collaborate on technology
- No clear IP ownership provision in the collaboration agreement
- Employees of both companies contribute to conception
- Patents name inventors from both companies
- Neither company holds a full assignment
Assignment from Individual to Multiple Parties
- An individual inventor holds the patent
- Multiple parties each purchase a fractional interest
Statutory Framework
35 U.s.c. § 262
- Default rules for co-owners
- § 256: correction of inventorship
- § 116: adding/removing inventors during prosecution.
What are the practical risks of patent co-ownership for each party?
Patent co-ownership creates specific risks that depend on the relationship between the co-owners.
Competitor Co-owner Scenario (Worst Case)
- Company A and competitor Company B co-own a patent
- Company B licenses the patent to all of Company A's customers at zero royalty
- Company B refuses to join as co-plaintiff in enforcement actions
- Company A is effectively left with no ability to monetize or enforce the patent
The Joinder Rule
- Ethicon v. Quigg (Fed. Cir. 1988) and Ethicon v. United States Surgical (Fed. Cir. 1998): ALL co-owners must voluntarily join as co-plaintiffs in an infringement suit
- A co-owner who refuses cannot be compelled to join (unlike in many foreign systems)
- A compulsory joinder provision in a joint agreement CAN override this — but only by contract between the co-owners
Infringer's Exploitation of Co-ownership
- An infringer can identify co-owners and approach the less powerful one for a cheap license
- That license provides complete immunity against ALL co-owners
- This is a known tactic in patent litigation
Licensing Income Dilution
- Each co-owner can license the patent independently
- The licensor keeps all royalties from its licenses
- The other co-owner has no right to share
- If both co-owners actively license, they may compete with each other in licensing negotiations
Non-economic Risks
- If a co-owner goes bankrupt, its interest can be licensed by the bankruptcy trustee to competitors
- If a co-owner is acquired by a competitor, the acquirer inherits the co-owner rights
International Operations
- A US co-owner's rights are limited to the US patent
- Foreign national phase patents may have different co-owners and be subject to local laws (requiring consent for licensing).
How does co-ownership work differently in other countries?
US § 262's permissive independent licensing rule is an exception — most countries require consent for licensing.
European Union. Under EPC and national laws, each co-owner can work the patent for its own benefit
But
- Licensing requires CONSENT of all co-owners
- This means a co-owner cannot grant a third-party license without permission of the other co-owners
- Enforcement: co-owners act jointly or with authorization
United Kingdom. UK Patents Act § 36: each co-owner can work the invention for its own benefit without consent
But. Cannot grant licenses without consent of other co-owners
Germany
- German Patent Act § 741 BGB applied: each co-owner can use the invention
- Licensing requires all co-owners to consent
- Enforcement: all co-owners must typically join
France
- French Intellectual Property Code Article L613-29: each co-owner can exploit the patent independently
- But sublicensing requires consent of all co-owners
China. Patent Law Article 15: each co-owner can independently exploit the patent
But
- Cannot license to third parties without consent of all co-owners
- Royalties from licenses must be shared among all co-owners
Japan
- Patent Act Article 73: each co-owner can independently practice the patent
- Licensing requires consent of all co-owners
Practical Implication for Global Portfolios
- US co-ownership: independent licensing possible
- Foreign co-ownership: licensing requires consent everywhere but the US
Strategy
- Address international co-ownership rules when structuring global research collaborations
- The consent requirement in most countries provides some protection against exploitation of co-ownership gaps.
How should co-ownership be addressed in collaboration agreements?
The best approach to co-ownership is to address it expressly before collaboration begins.
Option 1 — Avoid Co-ownership
- Give each party sole ownership of the patents it invents
- Cross-license to the other party
- Advantages: clear ownership
- Avoids § 262 problems
- Enforcement not complicated
- Disadvantage: requires careful division of patent rights between inventors
Option 2 — Designated Owner
- One party is designated as the sole owner of all collaborative patents
- The other party receives a license (exclusive or non-exclusive in its field of use)
- Advantages: clear enforcement rights
- Disadvantage: one party gives up ownership
Who Gets Ownership
- The party contributing more inventive effort
- The party closest to commercialization
- The party taking most financial risk
Option 3 — Co-ownership with Modified Defaults
- Co-ownership preserved but § 262 defaults modified by contract
- Modifications may include: require consent of both parties for any licensing
- Designate one party as managing owner for licensing and enforcement
- Require profit sharing from licenses
- Require consent for transfer of interest
- Require compulsory joinder for enforcement
Joint Patent Management Committee
- For portfolios with many jointly owned patents: committee with representatives from each company
- Defined voting procedures
- Defined licensing authority (which licenses can one party grant alone?)
- Defined enforcement procedures
- Cost sharing for prosecution and maintenance
Assignment Triggers. What happens when one party is acquired?
Rofr
- Right of first refusal to buy co-owner's interest
- Automatic assignment to the other co-owner on acquisition by a competitor
Publication and Disclosure Control
- Both parties must agree before any publication disclosing jointly owned inventions
- Minimum review period before submission.
What happens to co-owned patents in M&A transactions?
Mergers and acquisitions involving co-owned patents create complex issues that require specific diligence and structuring.
Due Diligence
- Acquirer must identify all co-owned patents in the target's portfolio
- For each co-owned patent: who is the co-owner?
- What are the co-owner's rights under the agreement (if any)?
- Are there any consent requirements for transfer?
Transferability
- A co-owner's interest is transferable unless the agreement restricts it
- § 262 allows transfer of an undivided interest
- The transferee steps into the transferor's shoes as a co-owner
Change of Control Provisions
- Well-drafted co-ownership agreements include change of control provisions: if a party is acquired by a competitor of the other co-owner, the acquirer may NOT receive co-owner rights
- Instead, the interest converts to a non-exclusive license
- Or the other co-owner has a right to purchase the interest
Rofr on Change of Control
- If Company A (co-owner) is acquired by Company B (competitor of Company C, the other co-owner), Company C has the right to buy Company A's co-ownership interest before it passes to Company B
- Prevents competitor from becoming a co-owner
Hostile Acquisition Scenario
- Competitor acquires a company holding co-owner rights
- Now the competitor is a co-owner
- Can license to all other competitors
- Can refuse to join enforcement actions
- The remaining co-owner loses all practical enforcement rights
Restructuring Options
- After a problematic acquisition: negotiate for the acquirer to transfer/license co-owner rights back
- Offer to buy out co-owner rights
- Negotiate a cross-license that effectively terminates the co-ownership problem
Valuation
- Co-owned patents are often valued lower than solely owned patents due to enforcement difficulties
- Buyers should discount accordingly.
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