Amon v Raphael Tuck & Sons Ltd

Subject Matter

PRACTICE — Practice and procedure — Parties — Joinder — Application by defendants to add further defendant — Allegationby plaintiff that confidential information made use of in design of a pen — Claim by plaintiff for injunction restraining defendants from making use of information — Claim by third person to be inventor of defendants' pen — Third person's claim to be entitled to minimum royalty from defendants on sales of pen — Whether third person a “necessary” party to the action — R.S.C., Ord. 16, r. 11.