“[A] Pallet container for the transporting and storing of liquids, having a flat pallet, an exchangeable inner container made of plastic material with an upper, closable filler opening and a lower emptying device and also, surrounding the inner container, one outer sleeve which consists of vertical and horizontal lattice bars made of metal which support the plastic inner container filled with liquid, [B] the lattice bars which are configured as tubes being indented at the intersection points to form trough-like, double-walled recesses extending in the longitudinal direction of the lattice bars [C] in such a manner that at each intersection point between the longitudinal edges of the recesses of two lattice bars lying perpendicularly one above the other there arise four contact points with a material accumulation respectively corresponding to the quadruple lattice bar wall thickness, and the four contact points of the two lattice bars being welded together at the intersection points, [D] characterised in that the trough-like recesses of the vertical and horizontal lattice bars have a central raised part extending across the cross-section of the recesses, [E] two lattice bars respectively lying one above the other at the intersection points are welded together at the four contact points of these raised parts and the incisions of the recesses of the lattice bars adjacent on both sides to the raised part [F] with the contact and weld points form restrictedly elastic bending points with a reduced bending resistance moment relative to the raised part for relieving the weld joints at the intersection points upon application of static and/or dynamic pressure on the lattice sleeve.”
“62. [B]oth patents are for a screen consisting of a frame … to which two meshes of different mesh sizes are … adhesively secured at the periphery so as to be at different tensions. The differences are the striking screens of the first patent and the flexible apertured [frame] … of the second. … . 63. The meshes … quickly become torn in use. … The plaintiffs … therefore … enjoy [the] aftermarket in selling replacement screens made in accordance with their inventions. 64. The defendants [sell] reconditioned screens made from the plaintiffs’ own frames. The [metal] frames … weigh about 10 kilos [and look] ‘more like a drain cover than a picture frame’. They are durable in relation to the rest of the materials of the screen. The defendants acquire the frames from the plaintiffs’ customers and strip them down to the bare metal by sandblasting. They recoat them with adhesive polyethylene and attach the two layers of mesh, coarse below and fine above. The differences in the sizes of the mesh produces the necessary differential tensions when both are tensioned together. Heat is then used to bond the meshes to the polyethylene coating of the frame, the selvage of mesh around the frame is cut off and the edges trimmed and taped. …”
“[The patented] product ceased to exist when the meshes were removed and the frame stripped down to the bare metal. What remained at that stage was merely an important component, a skeleton or chassis, from which a new screen could be made.”
“When a man has purchased an article he expects to have the control of it, and there must be some clear and explicit agreement to the contrary to justify the vendor in saying that he has not given the purchaser his licence to sell the article, or to use it wherever he pleases as against himself.”
“Where by virtue of a transaction, instrument or event to which section 33 above applies a person becomes the proprietor or one of the proprietors or an exclusive licensee of a patent and the patent is subsequently infringed, the court … shall not award him damages or order that he be given an account of the profits in respect of such a subsequent infringement occurring before the transaction, instrument or event is registered, in proceedings for such an infringement, the court … shall not award him costs or expenses unless – (a) the transaction, instrument or event is registered within the period of six months beginning with its date; or (b) the court … is satisfied that it was not practicable to register the transaction, instrument or event before the end of that period and that it was registered as soon as practicable thereafter.”