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Opposition to grants-continued.
Appeal to Law Officer-continued.

limit of time, extension of, 156, 571
notice of hearing, 156, 571, 572
parties to be heard, 157, 489
evidence, when additional, 156, 572

attendance for cross-examination, 157, 572
expert assistance, 149, 489
costs, 157, 572
Sæ also Sealing of Patent

Paper Anticipation, defined, 20 (n.)

Sce Prior Publication by documents
Paper, drying (Crompton v. Ibbotson), 75

sulphite pulp (Partington v. Hartlepool), 22
Paraffin, manufacture of (Young v. Fernie), 44
Patentable Invention defined, 4
Patent, definition of term, 2, 502
use of term “patent,” 2

penalties for improper, 2, 510, 594
for combinations. See Combinations
duration of, 490

See Date
extension of term o', 493, 494
form of : Form W, 569

of application for duplicate, 561
for improvements. See Improvements
register of. See Register
renewal of, 490, 491, 539, 591

fees for, 542, 592
application to enlarge time, 558

certificate of, 557
subjects of, 2

for one invention only, 56, 107, 108, 498

See also Master Patent, and Sealing
Patent Medicines not under Patent Office, 596
Patent Museum, 499, 598
Patent Office, establishment and control of, 503

advice not given by, 595
copies of documents in evidence, 504
does not recommend particular agents, 595

nor give financial aid, 595
forwarding documents to, 541
hours of business at, 540
publications of, 598, 599

where to be seen, 600-605
replies by post from, 594
sale of drawings at, 596
seal of, 101

received in evidence, 503
search undertaken by, 594

Su New Practice, Search

Patentee, definition of, under Act of 1883, 502

importer of invention may be, 48
true and first inventor, 49

Se Application, Inventor, True and First Inventor
Pavement Lights (Hayward v. Hamilton), 277

alteration of shape is invention, 36

new principle in, 10, 32
Payment of Fees. See Fees and Patent
Pencil-cases, drop action in (Woodward v. Sansum), 66, 300
Petition for Revocation, validity tested by, 84
Phonograph (United Telephone Co. v. Harrison), 69
Photography, daguerreotype process (Beard v. Egerton), 78

Pioneer Invention defined, 15
eg. Edison lamp, 62, 297

incandescent mantles, 62, 383, 390
claims for, are wide, 62

per Lindley, L.J., 319
construction of, 94

Pince-nez, helical springs (Pickard v. Prescott), 339

pivoted placquets (Wood v. Raphael), 44, 399
Polishing yarns (Brooke v. Aston), 45

Post, sending documents by, 506, 541

Powder. See Explosive

Practical Directions. See Sufficiency of Specifications

Preservation of meat (Bailey y. Roberton), 270

Principles distinguished from Inventions, 7, 9
e.g. disinfector, 10, 358, 361, 362

gas-engine, 10, 288
hot blast, 10, 189
pavement prisms, 10, 277, 280

purification of gas, 10, 208, 211
importance of distinguishing, II

in comparing inventions, 31, 33

See Identity of Inventions
of chemical inventions, il
of mechanical, 10
not patentable, 9
claim to all forms is claim to, 89

per Alderson, B., 189
Printing, copper-plate (Sturtz v. De la Rue), 75

publication by use of machine for (Hoe v. Foster), 25
stop-press news (Taylor v. Annand), 42, 93, 445

Prior Grant, ground of invalidity, 20, 51

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Prior Publication, defined, 19, 20
general rule as to, 23

unsuccessful experiments are not, 23
may be from abroad, 23

See Exhibitions
a question of fact in each case, 23, 222, 282

to be reasonably considered, 23, 26, 204, 339
specifications published in law, 25

per Lord Watson, 344
Illustrations of

in confidence to colleague, 25
manufacture for sale, 24

in a shop openly, 24
sale of foreign book, 26, 221

same as English (Lopes, L.J.), 222
travelling with samples, 24
user of crane, 24

user of printing machine, 25
By documents, 25, 27

illustrations of, 26, 27, 221, 282, 339
Lord Romilly, M.R., on, 221, 222
Brett, L.J., on, 289
Cotton, L.J., on, 225
in specifications, 25, 26

limit to, under Act of 1902, 26, 524
amount of disclosure necessary, 27, 28,

critical consideration of, 289
in specifications (per Lord Cranworth), 220

per Lord Westbury, L.C., 219, 220, 223
sufficiency not necessary, 222-225

per Lord Halsbury, L.C., 344

per Lord Watson, 345
Prior User, a ground of invalidity, 19
amount of, that invalidates, 21

illustrations of, 21, 22
manufacture openly, without sale, 21

per Lord Chelmsford, L.C., 220
by inventor invalidates, 21

per Lord Campbell, C.J., 218
alidating without disclosing, 22, 23
Exhibitions. See Exhibitions
dure to obtain a patent, before 1883, 54

the Act of 1883, 100-115
first steps, 100
Jurisdiction of Comptroller and Law Officers, 101
modes of Application, 104

with provisional specification, In
steps after provisional protection, 109
with complete specification, 105
reference of specifications to examiners, 115
acceptance, 117

Sre also Application
search under the Act of 1902, 116
New Practice,

Opposition, and Amendment

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Processes, patentable, 8

comparison of, 31
rearrangements constituting manufactures, 42
altering temperature, 37

Lord Herschell on, 190
cyanide extraction of gold, 37, 369
explosive, 42, 394
gas-lamps, 42, 336
gas-purification, 43, 208
glass furnace, 42, 245
selecting materials, etc., 43, 44

waterproofing, 42
machine claimed instead of, 45, 195 (n.)

Professional assistance, when of value, 101

Proportions, mention of, in specification, 88
of metals for alloy, 89

per Lord Westbury, 220
of ingredients in dynamite, 276
dye, giving examples (per Romer, J.), 366
when limiting claim, 89
ingredients in smokeless powder, 89

Lord Herschell on, 418
in incandescent mantles, 89

Romer, J., on, 391
Provisional Specification, form of, 550

origin and object of, 54, 55
to describe nature of invention, 55, 64, 336, 486
not details (per Byles, J.), 204

per Lord Cairns, L.C., 272

per Cotton, L.J., 304
substitute for older title, 56, 106
to commence with title, 56, 106, 486
should be drawn wide, 106
drawings for, if required, 56, 107, 486
for one invention only, 56, 107, 108, 498
not referred to in construing complete, 99

See also Application
Provisional Protection afforded, 490, 593
Public, rights of the, 19
Public Interest, patents granted in, i

amendments of specifications in, 103
Public Knowledge. See Knowledge
Public Policy requires utility, 80

invalidates for secret user, 21, 79
Publication, none of inventions required by War Office, 117

of anticipations. See Prior Publication
Publications of Patent Office. See Patent Office

Purification of gas. See Gas-purification

Railway Signals, useless (Easterbrook v. G. W. Ry. Co.), 83
Realm, extent of the, I, 19, 490
Reels with hooks (Longbottom v. Shaw), 44, 332
Reference to earlier patents in Public Interest, 102, 116, 524

without disclaimer useless, 146

See also Disclaimer, Opposition to Grants
Refrigerators, equivalents in (Hocking v. Hocking), 99
Register of Patents to be kept, 493

includes those before 1883, 512
matters to be registered, 493

assignments, &c., 493, 504, 537, 593
Convention application, date of, 178, 537
fees, on certificates, 538

failure to pay, 538
grant, address of patentee, 537

alteration of address, 537, 565
notification of licence, 538
not trusts, 503

orders of Privy Council, 538
evidence of matters therein, 493, 504, 539
inspection of, 504, 538, 539
rectification of, by the Court, 504
request for entry of licence, 538, 560
request for entry of partnership, 537

Form L, 537, 559

proof of title, 537, 538
Registration cannot protect mechanical inventions, 595

Renewal of Patent. See Patent

Results, old, specification narrowly construed, 239

illustrations of no invention in, 46

See Invention, Inventive Ingenuity, Manufacture
Revocation, petition for, validity tested in, 4

connection of, with grounds of Opposition, 119

proceedings for, 494, 495
Rhodamine. See Dyes
Rival Inventor, knowledge of, not public, 24
position of, 47, 607-609

under Act of 1852, 54
first applicant succeeds, 49

See True and First Inventor, Contemporaneous Applications
Roller Skate (Plimpton v. Spiller), 258

subsidiary claim to fastener, 58, 64, 95
Roving Cotton, centrifugal presser for (Seed v. Higgins), 212
Rules, Board of Trade to make, 507, 519

set out, 526-544
regulating appeals to Law Officers, 571, 572

.

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