tice in writing, at the office, of his intention to proceed with his application for letters patent, the same is to be forthwith advertised in the London Gazette, with the name and address of the petitioner, and the title of his invention.

94. OPPOSITION MUST BE IN WRITING WITHIN TWENTYONE DAYS.—Any person may, within twenty-one days thereafter, leave particulars in writing, at the office, of objections to the application.

95. APPLICATIONS FOR OR AGAINST SEALING TO BE BY NOTICE IN WRITING LEFT AT OFFICE.-Every application to the Lord Chancellor against or in relation to the sealing of letters patent shall be by notice, and such notice shall be left at the Commissioners' office, and shall contain particulars in writing of the objections to the sealing of such letters patent. (Chancellor's Order, Oct. 15, 1852.)

96. NOTICE TO PROCEED FEE £5.-The fee on giving notice to proceed is £5. (Schedule of Act.)

97. OBJECTIONS TO BE REFERRED TO LAW OFFICER.-The time for making objection having expired, the provisional or complete specification, with the particulars of the objections, (if any,) shall be referred to the law officer to whom the original application had been referred.

98. LAW OFFICER TO DECREE COST AND BY WHOM PAID. The law officer, in case of objection, is to order the costs incurred thereby to be paid by such person as he shall fix, and has power to enforce payment. (§§ 13, 14.)

99. LAW OFFICER MAY THEN ISSUE WARRANT FOR SEALING PATENT.-After such hearing, the law officer may issue a warrant, sealed with the Commissioners' seal, for sealing the letters patent, setting forth their

tenor and effect, and directing the insertion of such restrictions and conditions as he may deem proper pursuant to the act. (§ 15.)

100. PROVISION INSERTED THAT COMPLETE SPECIFICATION SHALL BE FILED WITHIN SIX MONTHS.-A provision is to be inserted in all letters patent, in respect whereof a provisional and not a complete specification shall be left on the application for the same, requiring the specification to be filed within six months from the date of application. (2d Set of Rules, Oct. 15, 1852.)

101. PATENT FEE £5, AND STAMP £5.-The fee for the law officer's warrant is £5, and the stamp on letters patent is also £5. (Schedule of Act.)

102. LETTERS PATENT VOID IF BEFORE EXPIRY OF THREE YEARS £50 BE NOT PAID, AND IF BEFORE EXPIRY OF SEVEN YEARS £100 BE NOT PAID.-Letters patent thus granted shall be subject to the condition of becoming void, unless before the expiration of three years a further fee of £40 and a stamp duty of £10 (in all £50) be paid, and unless before the expiration of seven years a further fee of £80 and stamp duty of £20 (in all £100) be paid. Memoranda of such payments shall be indorsed on the warrant for the letters patent, and a certificate of the same given, and also indorsed on the letters patent.

103. ISSUE OF LETTERS PATENT, THEIR EXTENT AND LIMIT. The Commissioners, when required by the applicant, shall then cause letters patent to be prepared according to the warrant, which shall be sealed with the great seal of the United Kingdom. Such letters patent shall extend to the whole of England, Scotland, and Ireland, to the Channel Islands, and to the Isle of Man. Should the warrant so direct, the letters patent may also

apply to any colonies or plantations abroad which may be specified. But they will have no authority in any colonies where the law in force in such colonies would render them invalid. A transcript of the letters patent is to be transmitted to the director of chancery in Scotland, which transcript is to be received in evidence in all Scottish courts of law. (§ 18.)

104. MUST BE ISSUED WITHIN THREE MONTHS FROM WARRANT, AND DURING PROVISIONAL PROTECTION, UNLESS DELAYED BY CAVEAT.-Patents cannot be issued unless applied for within three months from the date of the warrant, and during the six months of provisional protection or complete specification, unless delayed by a caveat, or application to the Lord Chancellor against sealing the letters patent. In such case they may be scaled at such time as the Lord Chancellor may direct. (See Instruction 41, §§ 19, 20.)

105. BUT LORD CHANCELLOR MAY ALLOW MONTH'S LIMIT IF DELAY BE PURELY ACCIDENTAL.-But by the sixth clause of the act of the 16 and 17 Vict., ch. 115, the Lord Chancellor may seal letters patent after the expiration of provisional protection, provided the delay in such sealing has arisen from accident, and not from the neglect or willful default of the applicant, the sealing to be dated as of any day before the expiring of provisional protection, and in like manner he may extend the time for filing the specification; such extension, however, is not to exceed one month.

106. IN CASE OF DEATH PATENT GRANTED TO REPRESENTATIVES WITHIN THREE MONTHS.-In case of the death of the applicant during the period of protection, letters patent may be granted to the personal representatives

during such period, or within three months of the death of the applicant. (§ 21.)

107. IF LOST, NEW PATENT MAY ISSUE ACCORDING TO COMMISSIONERS' REGULATIONS.-In case letters patent be lost or destroyed, others of like effect may be issued, subject to such regulations as the Commissioners may make. (§ 22.)

108. DATE OF LETTERS PATENT.-Letters patent are to be dated as of the day of the application for the same, and if bearing date prior to the day of actual sealing, are to be equally valid. (§§ 23, 24.)

109. PATENTS FOR FOREIGN INVENTIONS EXPIRE WITH ORIGINAL FOREIGN PATENT.-Patents for foreign inventions, previously patented abroad, shall only continue in force in the United Kingdom as long as they shall be valid in the foreign country where the patent is already obtained, and where more than one patent is taken out abroad, the termination of the British patent shall take place when the first of such foreign patents shall expire. ($ 25.)

110. PATENTS NOT TO PREVENT FOREIGN SHIPS USING THE INVENTION.-Letters patent granted under this act shall not prevent the use of the invention thereby secured on board of foreign ships resorting to British ports, except when the government to which such ships belong shall forbid the use by British ships of foreign patented inventions. (§ 26.)

111. SPECIFICATIONS TO BE FILED WITH COPY OF DRAWINGS.-Specifications are to be filed at the office with an extra copy of any drawings. (§§ 27, 28.) But by the 16 and 17 Vict., ch. 115, a true copy of every specification and complete specification, with the drawings

accompanying them, are to be left at the office on filing such specification or complete specification.

112. SIZE OF SPECIFICATIONS.-All specifications, in pursuance of the conditions of letters patent, and all complete specifications accompanying petitions for the grant of letters patent, shall be respectively written bookwise upon a sheet or sheets of parchment, each of the size of twenty-one and a half inches long by fourteen and three-quarter inches broad. The same may be written on both sides of the sheet, but a margin must be left of one and a half inch on every side of each sheet.

113. SIZE OF DRAWINGS AND SCALE.-The drawings accompanying such specifications shall be on a sheet or sheets of parchment, each twenty-one and a half inches long by fourteen and three-quarter inches broad, or twenty-one inches broad by twenty-nine and a half inches long, with a margin of one and a half inch on every side of each sheet.

[It is recommended to applicants and patentees to make their elevation drawings according to the scale of one inch to a foot. Lord Chancellor's order, October 1, 1852.]

114. EXTRA COPY OF SPECIFICATION TO BE LEFT WITH ORIGINAL; SIZE, &c.—An extra copy of the provisional specification or complete specification is to be left at the office with the original. It is to be written on sheets of brief or foolscap paper, briefwise, and on one side only. The extra copy of drawings must be according to the directions given above. (See Instruction 36.) (3d Set of Rules, Dec. 12, 1853.)

115. DOCUMENTS TO BE LEGIBLY SIGNED.-All specifica