IDA Ltd & Ors v University of Southampton & Ors

Factual and Procedural Background

This appeal concerns a dispute between Company A, two individuals identified as Mr. Metcalfe and Dr. Lax, and Company B (the claimants), and The University, Professor Howse, OBE, and Dr. Ashby (the defendants), over ownership of a bundle of patent applications related to methods and devices for trapping and killing insects. The patent applications include a UK application, an international application, a European patent application, and an Australian patent application. The applications were filed by or on behalf of The University, with Professor Howse and Dr. Ashby named as inventors.

The defendants contended that they were sole or joint inventors with contractual rights to the inventions and that the claimants had no interest. The claimants disagreed, leading to a breakdown in negotiations and a reference to the patent office to determine inventorship and entitlement under the Patents Act 1977.

The matter was heard before the Divisional Director acting for the Comptroller in March 2003, following a six-day hearing including extensive cross-examination. The Divisional Director issued a decision a year later, holding that the defendants were not inventors and that the applications belonged to the claimants. The defendants appealed this decision.

Legal Issues Presented

1. Who are the true inventors of the patent applications concerning insect trapping and killing methods using magnetic powders?
2. Whether the claimants or the defendants hold entitlement to the patent applications under the Patents Act 1977.
3. Whether the Divisional Director's finding of sole inventorship by the claimants was correct or whether joint inventorship including the defendants should be recognized.
4. The proper legal test for determining inventorship and entitlement under the Patents Act 1977, including the interpretation of "inventor" and "joint inventor".

Arguments of the Parties

Defendants' Arguments

• The defendants asserted that Professor Howse and Dr. Ashby were the sole inventors of the inventions described in the patent applications.
• They argued there was only one global inventive concept, which was entirely their creation.
• The defendants challenged the finding that Mr. Metcalfe was the sole inventor and sought recognition of joint inventorship.
• They contended that the claimants did not contribute to the inventive concept but only to enabling disclosure or data supply.

Claimants' Arguments

• The claimants maintained that Mr. Metcalfe and Dr. Lax were the true inventors or at least entitled to a share in the patent applications.
• They identified multiple inventive concepts within the patents, not a single global concept.
• The claimants relied on the Divisional Director’s findings that the defendants’ evidence was unreliable and that the claimants were sole inventors.
• They argued that the defendants had no contractual or equitable right to the inventions based on breach of confidence or misuse of confidential information.

Table of Precedents Cited

Precedent	Rule or Principle Cited For	Application by the Court
Goose v. Wilson Sandford & Co [1998] EWCA Civ 245	Delay between hearing and judgment is unfair and undermines confidence in the legal system.	The court emphasized that the year-long delay in issuing the Divisional Director’s decision was unacceptable, despite the decision being carefully prepared.
Henry Brothers (Magherafelt) Ltd v. The Ministry of Defence [1997] RPC 693	Inventor is the person responsible for the inventive concept; contribution must be substantial to the inventive concept.	The court adopted the approach that inventorship requires responsibility for the inventive concept, not merely contribution to claims or enabling disclosure.
Henry Brothers (Magherafelt) Ltd v. The Ministry of Defence [1999] RPC 442 (Court of Appeal)	Confirming the need to identify the inventive concept and those responsible for it.	The court accepted the primary judge’s approach except for one categorization, affirming the necessity to identify the inventive concept.
Markham Corporation v. Zipher Ltd (No 1) [2004] RPC 10	Definition of "devisor" as one who plans or devises the invention, not merely the maker or implementer.	The court considered the threshold for inventorship includes devising the invention, not just possessing a wish list or untested idea.
Collag Corp. v. Merk & Co Inc [2003] FSR 216	Inventorship may include those contributing to the combination or enabling the invention to work.	The court acknowledged that co-inventorship may arise from contributions that make the invention work, but this must be assessed on facts.
Biogen v Medeva plc [1997] RPC 1	Enabling disclosure is central to patent law but distinct from inventorship.	Referenced to distinguish between devising an invention and enabling disclosure; only the former defines inventorship.

Court's Reasoning and Analysis

The court began by identifying the relevant patent applications and the parties involved in the dispute over inventorship and entitlement. It examined the factual background, including the original electrostatic insect trap patented by the defendants and the subsequent suggestion by Mr. Metcalfe to substitute magnetic powders for electrostatic powders, as described in a public article.

The court analysed the Divisional Director’s findings, emphasizing that the defendants’ evidence, particularly that of Professor Howse and Dr. Ashby, was not fully reliable. The Divisional Director identified two inventive concepts: (a) a method of trapping or killing pests using magnetic particles adhering to insect cuticles, and (b) an insect trap or bait station where magnetic particles are anchored to a magnetic zone.

The court considered the legal framework under the Patents Act 1977 and the European Patent Convention, focusing on the definition of "inventor" as the actual deviser of the invention. It reviewed relevant case law, particularly the Henry Brothers case, to clarify that inventorship requires responsibility for the inventive concept, not merely contributing to enabling disclosure or data provision.

The court rejected the defendants’ argument that only one global inventive concept existed and that they were sole inventors. It found that Mr. Metcalfe’s contribution was limited to the idea of substituting magnetic powders for electrostatic powders related to the “banana-skin” effect, but that he did not conceive the broader inventive concepts involving magnetic powders adhering to insect cuticles or the bait station effect (“sticky poison”).

Given that the claimants did not prove that the defendants contributed nothing of substance to the inventive concepts, the court held that the defendants should be reinstated as co-inventors alongside Mr. Metcalfe and Dr. Lax. The court acknowledged the claimants’ previous acceptance of shared inventorship and found no unfairness in recognizing joint inventorship despite the defendants’ prior all-or-nothing defence.

Holding and Implications

The court ALLOWED THE APPEAL IN PART by reinstating Professor Howse and Dr. Ashby as co-inventors alongside Mr. Metcalfe and Dr. Lax.

This decision recognizes joint inventorship of the patent applications, correcting the Divisional Director’s prior finding of sole inventorship by the claimants. The direct effect is that the defendants retain entitlement rights as co-inventors. The court did not establish any new legal precedent but applied established principles of patent law concerning inventorship and entitlement under the Patents Act 1977 and relevant case law.