The UK Court of Appeal recently issued a judgment in an application by Lantana Ltd which provides a useful summary of the tests for excluded subject matter in the United Kingdom, as set out in previous cases. However, the judgment does little to clarify what continues to be a rather opaque and fact-specific area of the law.
The court upheld the High Court’s decision that the invention claimed in Lantana’s application was excluded from patentability as relating to a computer program, as such. The full judgment can be viewed here.
The claim in Lantana’s application was directed to a method of transferring data between two computers over the Internet, whereby the first computer sent an email specifying a file to the second computer and the second computer automatically responded by sending an email response with the file attached. Lantana asserted that the advantage of the claimed method was that it saved the need for continuous connection to the computer storing the files.
The novelty and inventiveness of Lantana’s claim was never at issue. The application was rejected by the UK Intellectual Property Office (UKIPO) solely on the basis of the invention constituting unpatentable subject matter under Section 1 of the Patents Act 1977, which excludes computer programs “as such” from patentability.
The judgment referred to the four-stage approach set out inthe court’s previous 2006 judgments in Aerotel Ltd v Telco Holdings Ltd; Macrossan’s Application. As laid out in Aerotel, the four steps comprise:
- properly construing the claim;
- identifying the actual contribution;
- asking whether it falls solely within the excluded subject matter; and
- checking whether the actual or alleged contribution is actually technical in nature.
Despite the use of the word 'alleged' in the fourth step of the Aerotel test, in Lantana’s appeal Lord Justice Kitchen emphasised, in line with further excerpts from Aerotel, that "it is the actual contribution to the art which the invention has made which must be considered". Therefore, the critical issue in question was whether the invention made an actual technical contribution.
It was also accepted that there is no comprehensive test for determining technical contribution. However, Paragraphs 45 to 49 of the Court of Appeal’s 2013 judgment in HTC Europe Co Ltd v Apple Inc were highlighted as providing a helpful starting point; they upheld the High Court’s application of the five “signposts” for assessing technical contributions which originated in 2009 from AT&T Knowledge Ventures’ Application.
In Lantana case the AT&T signposts were considered by both the hearing officer at the UKIPO and Justice Birss in the High Court, but in both cases it was concluded that none of the signposts assisted Lantana.
Lord Justice Kitchen agreed with Lantana that “it is the claim as a whole which must be considered when assessing the contribution which an invention has made, and that it is not permissible simply to cut the claim into pieces and then consider those pieces separately and without any regard to the way they interact with each other” (Paragraph 64). However, despite this, the Court of Appeal found that Birss had not erred in breaking the invention down into its constituent parts to determine whether there was a relevant technical step outside the computer program, especially since he subsequently considered the claim as a whole.
The court also stressed that although they should arrive at the same result, the European Patent Office (EPO) and the English courts adopt different methodologies when assessing the patentability of computer programs. Accordingly, EPO decisions provide only limited assistance to the English courts.
In assessing technical contribution, the court was dismissive of the relevance of prior patentability decisions: “It cannot be right… that simply because at one point in history a process constitutes a technical contribution that the same or similar process, even if novel, will constitute a technical contribution for all time” (Paragraph 43). Therefore, any similarity between the method of Lantana’s claim and that considered to be patentable in a previous IBM decision before the UKIPO did not assist Lantana in establishing patentability.
On the facts of this case it was found that the invention of Lantana’s application did not provide a technical contribution outside the computer program and was, therefore, not patentable.
The judgment in Lantana does not deviate from the general guidelines for the assessment of excluded subject matter and technical contribution in the United Kingdom as laid out in previous case law. However, the judgment does emphasise that in the fact-sensitive area of the patentability of computer programs, technical contribution is not a static test; the bar for establishing a technical contribution will continue to rise as the technical field progresses. Accordingly, one cannot rely on a previous finding of patentability for similar subject matter as evidence of a technical contribution. According to the court, “It all depends on the facts”.
For further information please contact:
This is a co-published article whose content has not been commissioned or written by the IAM editorial team, but which has been proofed and edited to run in accordance with the IAM style guide.