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You are here: BAILII >> Databases >> England and Wales High Court (Patents Court) Decisions >> Klemz v Comptroller-General of Patents, Designs and Trade Marks [2025] EWHC 650 (Pat) (21 March 2025) URL: http://www.bailii.org/ew/cases/EWHC/Patents/2025/650.html Cite as: [2025] EWHC 650 (Pat) |
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CHANCERY DIVISION
BUSINESS AND PROPERTY COURTS OF ENGLAND AND WALES
PATENTS COURT
Fetter Lane, London, EC4A 1NL |
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B e f o r e :
____________________
NICHOLAS KLEMZ |
Appellant |
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- and - |
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THE COMPTROLLER-GENERAL OF PATENTS, DESIGNS AND TRADE MARKS |
Respondent |
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Anna Edwards-Stuart KC (instructed by the Respondent) for the Respondent
Hearing dates: 12 March 2025
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Crown Copyright ©
Judge Hacon:
Introduction
The nature of the appeal
The invention
'4. The application relates to the field of vehicle propulsion. Primarily, the invention is described in the context of propelling a spacecraft in space, as noted on page 25, lines 13-19 of the description as filed. Specifically, the present invention proposes an apparatus that does not require an exhaust for expulsion of reaction mass. It appears to require a magnet adjacent to a cavity which emanates a magnetic field into the cavity, wherein the cavity further contains a cathode and an anode, such that electrons are emitted from the cathode and travel through the magnetic field and to the anode. This arrangement is alleged to result in momentum and kinetic energy from the electrons being transferred to the magnet, and hence the apparatus housing (when the device is accelerating). In summary, acceleration of the device is alleged to be achieved from deceleration of the electrons by the magnetic field. The reverse applies when the device is decelerating (transfer of kinetic energy from the apparatus to the electrons is alleged to decelerate the apparatus).'
'1. An apparatus for generating a force, the apparatus comprising:
a housing having a cavity therein;
a magnet adjacent the housing, the magnet and housing arranged so that, in use, the cavity contains a magnetic field from the magnet, magnetic field lines within the cavity comprising non-parallel magnetic field lines;
a cathode capable of emitting electrons into the cavity; and
an anode,
the arrangement being such that, in use, the cathode emits electrons into the cavity and the electrons are deflected by the magnetic field from the magnet, such that a force acts between the magnetic field from the magnet and a magnetic field from the electrons and kinetic energy is transferred between the apparatus and the electrons.'
'15 Claim 1 requires 'an apparatus for generating a force'. When construed in view of accompanying description and drawings, claim 1 is considered to require an apparatus suitable for generating a force where the generated force acts on the apparatus itself and can be used to accelerate or decelerate the apparatus and any object to which the apparatus is attached. The description provides example uses of the apparatus including the propulsion of a vehicle, such as a spacecraft in deep space, an aircraft in the atmosphere, a road vehicle, a submarine, or moving a load on a crane. While claim 1 does not explicitly require the generated force to act upon the apparatus, I am of the view that this is implicit in view of accompanying description and drawings. This interpretation of claim 1 is also consistent with the skeleton arguments and the description given by Mr Kelmz [sic] at the hearing.
16 The description states that the apparatus can act both as a thruster and a damper, and in each case it is alleged to result in a force that either causes the apparatus to accelerate (when used as a thruster) or decelerate (when used as a damper). Claim 1 further requires the apparatus to have a housing comprising a cavity. A cathode emits electrons into the cavity in direction of an anode. In some embodiments a cathode is circumferentially surrounded by an annular anode. In other embodiments – the opposite arrangement is envisaged – a central anode is circumferentially surrounded by an annular cathode, see e.g. page 18 lines 11-15 of the description as filed.
17 A magnet is provided adjacent the housing such that non-parallel magnetic field lines are within the cavity in use. The claim does not appear to require any other technical features. However, the claim appears to further attempt to define the physical apparatus by two desirable results achieved during its operation. Namely that:
i) the electrons are deflected by the magnetic field from the magnet in a way that a force acts between the magnetic field from the magnet and a magnetic field from the electrons, and
ii) that kinetic energy is transferred between the apparatus and the electrons, which is construed to (implicitly) cause said generation of a force alluded to in the preamble of the claim.
18 When considering the claim in view of accompanying description and drawings, it appears that claim 1 is envisaged to require provision of a magnet juxtaposed to the chamber (as opposing to e.g. being provided annularly around the chamber). Magnetic fields and electric fields are interrelated and are both components of the electromagnetic force. It is common general knowledge that a moving charge in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field.
19 I note that several parts of the description appear to cast doubt on claim 1 requiring that deceleration or acceleration of electrons is necessary for creating a force on the magnet in either direction. For example, page 4 lines 1-8 appears to suggest that this is merely optional, rather than essential. This appears to be a drafting issue. Therefore, for the purposes of reaching this decision, I have construed it to be an essential requirement of claim 1 that the magnetic field from a magnet must be orientated in the cavity such so as to decelerate the electrons as they move from the cathode to the anode.
20 The description, on page 10, lines 4-10, states that a created vortex of electrons will create a magnetic field that repels the magnetic field emanating from the juxtaposed magnet, acting to push the magnet and the vortex of electrons apart. Both uses of a bar magnet and an electromagnet are envisaged as alternatives, see page 27 line 30 for example. The induced electromotive force (emf) is described to slow down the electrons orbiting in the vortex (as noted on page 10, lines 20-21 for example). Page 11 continues to explain that the vortex of electrons is stationary in space, as it is being diminished and replenished at a new position in space as electrons are emitted from the cathode and into the vortex before the crash into the housing 103 (i.e. into the anode). Electrons reaching the anode return to cathode via a completed electrical circuit. In other words, claim 1 is construed to require an isolated system.'
The law
'[34] I think that the effect of these authorities is as follows. It is not the law that any doubt, however small, on an issue of fact would force the Comptroller to allow the application to proceed to grant. Rather he should examine the material before him and attempt to come to a conclusion on the balance of probabilities. If he considers that there is a substantial doubt about an issue of fact which could lead to patentability at that stage, he should consider whether there is a reasonable prospect that matters will turn out differently if the matter is fully investigated at a trial. If so he should allow the application to proceed.
[35] I think this approach to the consideration of objections to patentability is in accordance with the statutory framework. The examiner will first raise an objection and put it to the applicant. The applicant then has an opportunity of persuading the Comptroller that his basis for considering that the objection applies is not sound. If the applicant does not persuade him to withdraw the objection he may refuse the application (section 18(3)). But at that stage he should consider whether, because there is a substantial doubt about an issue of fact, there is a reasonable prospect that matters may turn out differently at a trial, when there will be a full exploration of the matter with the benefit of expert evidence. If there is such a reasonable prospect he should allow the matter to proceed to grant. It goes without saying that mere optimism and a reasonable prospect of matters turning out differently are not the same thing. The reasonable prospect must be based on credible material before the Office. Macawberism, here as elsewhere, does not provide any basis for supposing that anything helpful will turn up. Moreover the greater has been the opportunity for the applicant to produce such material at the application stage, the smaller scope there is for supposing that giving him the benefit of the doubt will lead to a different conclusion.'
'[47] Had the matter gone no further than the first two of the Hearing officer's criteria, it could be said that he was recognising there was a debatable underlying question of fact on which it could not be said that the applicant had no reasonable prospect of success. But his question concerning acceptance of the theory by the scientific community, was nevertheless a reasonable, and in the circumstances practical question to ask. Certainly, the absence of either widespread discussion or acceptance in the scientific literature or other media was a factor he was entitled to take into account. Such a question is an indirect way of approaching the underlying theory and physical phenomena. Does the absence of any real discussion or acceptance (or indeed practical demonstration) of GUTCQM mean that one can conclude now that there is no reasonable chance that the applicant would be able to establish his position at trial?
[48] It is clear that the Hearing Officer was alive to the danger of refusing an application in circumstances where the refusal depends on a disputed theory which may subsequently turn out to be correct: see the passage I have cited from [23] in the decision. In considering criterion (c) he was also alive to the fact that GUTCQM had been around for many years without evidence emerging as to its validity. That fact alone might be thought to make it unreasonable to suppose that the position would be different at a trial, particularly where, as here, the applicant had no reason which the Hearing Officer found plausible for explaining the absence of discussion or acceptance. There was certainly material before him on which he could have gone on to address, and decide, the question of whether there was any reasonable prospect that, on a fuller investigation, evidence would emerge which would support GUTCQM as a valid theory on the balance of probabilities. It would have been entirely fair for him to address and decide that question, given that the applicant had been given every opportunity to provide evidence is support of his theory.'
(1) When assessing whether a patent application should be refused under s.18(3) of the Act:
(a) The Office should examine the material filed and assess whether the invention is patentable on the balance of probabilities. If yes, the application should be allowed to go forward to grant.
(b) If no, the Office should consider whether there is a substantial doubt about an issue of fact which could lead to patentability. If no, the application should be refused.
(c) If yes, the Office should consider whether there is a reasonable prospect that the invention will be found patentable if that issue of fact is fully investigated at a trial. The application should be allowed only if the answer is yes.
(2) The reasonable prospect must be based on credible material before the Office and not on supposing that something helpful may turn up.
(3) The greater has been the opportunity for the applicant to produce such material, the smaller scope there is for supposing that fuller investigation will lead to a different conclusion.
(4) Matters which may be taken into account in resolving the issues under paragraph (1) include whether there has been authoritative independent comment on the invention, the nature of any such comment and in the absence of comment any plausible reasons for the absence.
The Decision
Lack of industrial application
(1) A body continues in a state of rest or uniform motion in a straight line unless it is acted upon by external forces.
(3) If one body exerts a force on another, there is an equal and opposite force, a reaction, exerted on the first body by the second.
'23. … a mechanism by which kinetic energy and momentum are transferred between the magnet/housing of the apparatus and the electrons emitted by the cathode. All the electrons emitted by the cathode eventually reach the anode. Therefore, any momentum that has been transferred from the magnet/housing to the electrons will be transferred back to the housing when the electrons reach the anode. In this way, the total momentum of the apparatus does not change, and the apparatus will not be accelerated or decelerated. The examiner has argued that momentum lost by the electrons as they decelerate around the axis of the cavity (i.e. the cathode) cannot be equal to the change in the momentum of the housing moving along the same axis because these two momenta act in different directions.'
'24 … the application does not describe any way in which the apparatus could exert a force on something external to itself. Page 10 of the description as filed explains how there is a force between the magnetic field of the magnet and the magnetic field due to the motion of the electrons emitted by the cathode. Newton's third law requires that the force exerted on the magnet by the electrons is equal and opposite to the force exerted on the electrons by the magnet. However, the electrons are contained within the apparatus itself, and will eventually reach the anode, where they will exert a force on the anode and the anode will exert an equal and opposite force back on the electrons (to decelerate them). The force exerted on the magnet by the magnetic field of the electron motion will be balanced by the force exerted on the anode by the electrons crashing into the anode, so there will be no net force exerted on the apparatus by the electrons.'
'25 … Starting with Maxwell's equations, he claims the apparatus exploits the laws of classical electricity and magnetism to surf a travelling transverse pressure wave in the electromagnetic field, so it works by directing and manipulating the electromagnetic field, to create a force in a direction. Specifically, Mr Kelmz [sic] alleges that the magnetic field acts to decelerate the electrons, and this results in acceleration of the device. Working as a thruster, it is alleged to create a transverse pressure gradient, which causes the magnet to be repelled away from the electrons emitted by the cathode, which in turn is what is alleged to create the force suitable for e.g. propelling a vehicle.
26 According to Mr Klemz, at the 2nd paragraph of page 12 of his skeleton arguments, all electromagnetic and mechanical momentum is conserved and accounted for. Momentum lost by the electrons as they decelerate around the axis is equal to the momentum gained by the housing as it accelerates along the axis. The device is mechanically sealed, but electromagnetically and thermodynamically the device is open as charge flows into the cavity via the cathode and flows out via the anode. Energy enters the cavity via the electric field between cathode and anode and exits via an antenna as radio waves and as waste heat. The electrons in the cavity are effectively in free space and at the instant they are emitted from the cathode they have a velocity of zero, so all of the energy and momentum they gain is from the force due to the electric field and they transfer this momentum to the housing via the magnetic field of the bar magnet via covariant electromotive (emf) and magnetomotive (mmf) forces as described by Faraday's law and Lenz's law.'
The experiments
'28 … In these experiments a prototype apparatus is suspended by a fishing line from a bicycle maintenance stand. Movement of the apparatus in these experiments was measured by shining a laser beam on to a mirror attached to the suspended apparatus and observing a laser dot produced by the reflected beam on a target screen. Movement of the laser dot across the screen indicates movement of the device itself.
29 … During the hearing Mr Klemz showed videos of the experiments he has conducted using the prototype apparatus. These videos show a laser dot traversing across a screen. They do not show what is happening to the prototype apparatus concurrent to the laser dot moving across the screen. …
30 In one of the experiments shown in a video recording called "static thrust", after the device is switched on, a small and gradual displacement of a laser dot can be observed over a short period of time, although the dot appears to vibrate during the course of said gradual overall displacement. As the video was played during the hearing, Mr Klemz remarked that the device is trying to push the pendulum uphill. At a certain point, displacement of the laser dot appears to be ceasing, which is when the applicant has further remarked during the hearing that the device comes to a halt, because the restorative force equals the thrust from the device. After the equipment was switched off, the laser dot does not appear to return to its original position.
31 To my mind, the fact that the laser dot does not appear to return [to] its start position appears to be contrary to what should be expected in a situation where a thrust is exerted on a suspended body, and then subsequently removed. In particular, if the device is suspended by a line, and a force acts to displace it sideways (upwards) like a pendulum - then the device should tend to swing back towards the neutral (bottommost) position when the thrust force is removed.'
'33 It is difficult to assess whether thrust is generated in the way the applicant describes based on the evidence provided in the video showing the laser dot alone, i.e. without a full and detailed view and analysis of the overall apparatus itself, e.g. from a concurrent second video showing the apparatus itself. I am of the view that the reason for displacement of the laser dot (and the device) is likely, if fully investigated at a trial with the benefit of expert evidence, to turn out to be due to reasons other than a thrust force. Potential other sources of the observed movement could include vibration of the device, a draft in the room, air convection, thermal expansion, non-recoverable deformation of test equipment part(s) due to heating.'
'34 Having considered the specification as originally filed, as well as the reasoning provided by the applicant during their follow-up correspondence, and during the hearing, I understand why the provided evidence may be considered to provide grounds for optimism that the invention may potentially be able to generate a force useful for industrial application. However, I am of the view that the conditions in which the experiments were conducted leave large margins for experimental uncertainties.
35 As noted above in paragraph 15 referring to Blacklight Power, mere optimism and a reasonable prospect of matters turning out differently are not the same thing. Considering the issue on the balance of probabilities, I am of the view that the evidence provided by the applicant does not give rise to a reasonable prospect that the applicant's theory might turn out to be valid if it were to be fully investigated at a trial with the benefit of expert evidence. Therefore, the claimed invention is considered to lack industrial application.'
The Grounds of Appeal
(1) The Examiner failed to understand the invention and mischaracterised it in her examination report. She therefore wrongly cited Blacklight Power Inc v The Comptroller-General of Patents [2008] EWHC 2763 (Pat) as relevant to this case.
(2) The Hearing Officer wrongly accepted Dr Waldie's mischaracterisation at face value and also the relevance of Blacklight Power.
(3) In Dr Waldie's examination report of 31 August 2023 Dr Waldie said 'I do not think that further discussions between you and myself are likely to change my assessment that your application does not meet the requirements of the Patents Act. Mr Klemz took this as a refusal to engage in a meaningful conversation and that it had deprived him of the chance to demonstrate the invention and disprove the conclusion reached by Dr Waldie.
(4) Dr Waldie was inexperienced and did not have the correct background in electromagnetism to enable her to understand the invention.
(5) The invention has two modes: an apparatus which generates a thrust, or alternatively a damper, force. The Hearing Officer had raised no objection in relation to the invention working as a damper. The two modes are symmetrical in that they rely on the same principles so her Decision lacked logic. Alternatively, the Application should at least have been allowed in relation to the apparatus in damper mode. The Hearing Officer had been shown a video of a prototype of the invention exhibiting damping behaviour which by itself established that a patent should be granted.
(6) The invention's operation as a damper is something any person skilled in the art should be able to understand and such a person who follows the instructions in the Application to build a prototype would be able to do so and to measure the damping behaviour.
(7) As the Hearing Officer raised no objection to the operation of the invention as a damper, it is reasonable to assume that if the Application had been written only to claim the apparatus as damper, it would have been granted.
(8) The operation of the invention as a thruster is much harder to understand because it is counter-intuitive.
(9) The Application deserves re-examination by a different examiner and Mr Klemz should have the chance to demonstrate the prototype in person.
The arguments
'In operation, the momentum and kinetic energy from the electrons as they are slowed down is transferred to the bar magnet and the housing and so in this way, momentum and energy are conserved. Newton's third law is also met, by the action force (repulsive force between the vortex and the bar magnet, pushing the bar magnet and housing forward) having an equal reaction force (induced emf slowing down the electrons in the vortex). Due to Faraday's law and Lenz's law, the action and reaction forces are in fact perpendicular to each other.'
Discussion
Conclusion