“Another great evil of the Patent system is this, that an invalid Patent really answers the purpose of protection almost as well as a valid one. I believe that there is not one Patent in ten which would bear scrutiny, and the mere name of a Patent often answers all the purpose. Nobody will face the litigation necessary to get rid of it. “In very many cases people prefer to pay black mail rather than undergo the expense of a law-suit?—In almost all cases; I know that in my own experience, if I find that a man has a Patent which I am satisfied is not a valid one, I would rather go out of the way to avoid any conflict with him.” So also Mr. Curtis:— “I have in one or two cases given £200 to a party for the use of an invention in which I have told him at once that what we used was not an infringement in any shape or form; but rather than run the chance of going to a tribunal where I was fighting with a man of straw, I have consented (thinking it was prudent to do so) to pay £200.” Mr. Woodcroft, in keeping with all this, testified— “I know of existing Patents which are but old inventions, as old as the hills.” The following extract from the Transactions of the National Association for the Promotion of Social Science presents another illustration of the mischief the Patent system works:— “The Patent in question having been purchased for a trifle by Mr. Foxwell, its merits were subjected to close scrutiny, and the specification being found to be defective in some respects, but possessing the quality of elasticity from the vagueness of its phraseology, it was resolved to improve it under the Disclaimer and Amendment Act. After undergoing a compound operation analogous to pruning and grafting, it was found to embrace almost every kind of shuttle sewing machine. In other words, it was hoped by the possession of this invaluable Patent to control nine-tenths of the sewing machine trade of Great Britain. Fired with this idea, Mr. Foxwell commenced legal proceedings against a well-known sewing machine manufacturer for compensation for an alleged infringement of his amended Patent, and at the third trial succeeded in driving his opponent into a compromise, whereby the sum of £4,250 was paid in liquidation of all demands. Encouraged by this success, he, through his solicitor, apprised the trade of his intention to levy royalties on the users of all needle and shuttle machines other than those manufactured by his licences, and, failing to bring many to his terms, he filed bills in Chancery against 134 defaulters.” Mr. Abel, of Chancery-lane, in a recent pamphlet, writes thus, to show how, in self-defence, Patents require to be taken:—