Mumbai University Solved Question Papers
Law of Patents
Previous Year Question Paper with Solution
LLM · Group 3 Law of Intellectual Property and Information Technology
2024-25 Examination
munotes.in
Mumbai
Mumbai University Solved Question Papers
Law of Patents
Previous Year Question Paper with Solution
LLM · Group 3 Law of Intellectual Property and Information Technology
2024-25 Examination
munotes.in
Mumbai
First published on munotes.in on 13 September 2026.
This edition revised 14 September 2026.
Published by munotes.in, Mumbai.
Model answers written and edited by the munotes.in editorial desk.
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The University does not publish an official answer key for this paper. The answers in this volume are model answers, written to show how a full-mark answer is built. They are a study aid, not an authority on what an examiner marked.
The question paper reproduced here is the paper as set by the University of Mumbai at the 2024-25 examination.
The law in these answers is stated as at September 2026, and four things date every textbook on this subject. THE INTELLECTUAL PROPERTY APPELLATE BOARD NO LONGER EXISTS: the Tribunals Reforms Act, 2021 omitted sections 116, 117, 117B, 117C and 117D of the Patents Act and substituted HIGH COURT for Appellate Board in section 117A, so appeals from the Controller and revocation petitions under section 64 now lie to the High Court, which is why the Delhi High Court framed its Intellectual Property Rights Division Rules in 2022. THE PENAL CHAPTER HAS BEEN CUT DOWN TWICE: the Jan Vishwas (Amendment of Provisions) Act, 2023 took effect for this Act on 1 August 2024 and turned sections 120, 122(1), 122(2) and 123 into PENALTIES imposed by an adjudicating officer under a new section 124A with an appeal under section 124B, omitting section 121 altogether; and the Jan Vishwas (Amendment of Provisions) Act, 2026, passed on 2 April 2026, took effect for this Act on 1 JUNE 2026, OMITTING SECTION 119 on falsification of the register in its entirety and adding a proviso to section 118 which, in the case of a contravention of section 39 only, disapplies it where in the opinion of the Central Government the invention was not relevant for defence purpose or atomic energy, so that section 118 is now the ONLY substantive criminal offence left in the Patents Act. THERE IS NO PATENT AMENDMENT ACT OF 2016, although one paper in this folder asks for its crucial features: the last amending Act is the Patents (Amendment) Act, 2005, and 2016 produced the Patents (Amendment) Rules, which introduced expedited examination and the startup category. AND THE RULES HAVE MOVED AGAIN: the Patents (Amendment) Rules, 2024, in force 15 March 2024, cut the time for requesting examination from forty eight months to thirty one, made the Form 27 statement of working triennial instead of annual, and codified the divisional application practice settled by the Division Bench in Syngenta Limited v. Controller of Patents and Designs on 13 October 2023.
The questions below are the paper as the University of Mumbai set it at the 2024-25 examination, in the order it was set.
MarksPage
The questions in this volume are the questions asked at the 2024-25 examination, reproduced as the University of Mumbai set them, in the order it set them. Nothing has been reworded, added or left out. Only the answers are ours. See the original question paper.
Duration 3 hours · Total marks 100 · 7 questions answered
How to use this volume
Solve the paper first, under exam conditions and against the clock. Then read the answers here and mark your own. Reading a solution before attempting the question feels productive and teaches very little, because recognising an answer is not the same as being able to write one.
Answer
For full marks, cover: two topics that the Act deals with in adjacent sections and that differ in one respect only, who initiates. Take SURRENDER first because it is short, then REVOCATION in its five forms, and be careful to state the FORUM correctly, because it changed in 2021. Close with the distinction from lapse and expiry, which is where candidates lose marks by treating four different endings as one.
The power. A patentee may AT ANY TIME by giving NOTICE in the prescribed manner to the Controller OFFER TO SURRENDER his patent. Surrender is voluntary and unilateral in its initiation, but it is not effective until the Controller accepts it.
The procedure. The Controller PUBLISHES the offer and gives NOTICE to every person, other than the patentee, whose name appears in the register as having an INTEREST in the patent. That is the heart of the section: a licensee who has paid for rights, or a mortgagee who holds the patent as security, would be destroyed by a surrender made behind his back. Any PERSON INTERESTED may, within the prescribed period, give NOTICE OF OPPOSITION, and the Controller notifies the patentee. After hearing the patentee and any opponent, IF SATISFIED THAT THE PATENT MAY PROPERLY BE SURRENDERED, the Controller may ACCEPT THE OFFER AND BY ORDER REVOKE THE PATENT.
Why a patentee surrenders. Because the renewal fees exceed the value; because a validity challenge is pending and he prefers to end the patent on his own terms rather than have a judgment against it; or because he has been advised the patent is bad and wishes to avoid an action for GROUNDLESS THREATS under section 106.
One: on petition or counterclaim, section 64. A PERSON INTERESTED or the CENTRAL GOVERNMENT may petition, and a defendant in an infringement suit may seek revocation by COUNTERCLAIM. The grounds in section 64(1) run from clause (a) to clause (q): that the invention was WRONGFULLY OBTAINED; PRIOR PUBLICATION in any specification filed in India on or after 1 January 1912 or in any other document anywhere; PRIOR CLAIMING in a complete specification of earlier priority; PUBLIC KNOWLEDGE OR PUBLIC USE IN INDIA before the priority date; OBVIOUSNESS and want of any inventive step; that the subject is NOT AN INVENTION within the Act or is NOT PATENTABLE under it; that the specification does not SUFFICIENTLY AND FAIRLY DESCRIBE the invention or DISCLOSE THE BEST METHOD; that the claims are not CLEAR AND SUCCINCT or not FAIRLY BASED on the matter disclosed; that the patent was obtained on a FALSE SUGGESTION OR REPRESENTATION; that the invention was SECRETLY USED in India before the priority date; failure to disclose the information required by SECTION 8 or furnishing false information; contravention of a SECRECY DIRECTION under section 35 or foreign filing without permission under SECTION 39; non-disclosure or wrong mention of the SOURCE AND GEOGRAPHICAL ORIGIN of biological material; and ANTICIPATION BY TRADITIONAL KNOWLEDGE of any local or indigenous community in India or elsewhere.
The forum, and the change of 2021. A petition under section 64 lay to the APPELLATE BOARD. The TRIBUNALS REFORMS ACT, 2021 abolished it: SECTIONS 116, 117, 117B, 117C AND 117D WERE OMITTED and in SECTION 117A the words APPELLATE BOARD were SUBSTITUTED BY HIGH COURT. A revocation petition now lies to the HIGH COURT, and a counterclaim is decided by the High Court to which section 104 requires the suit to be transferred once the counterclaim is filed. The Delhi and Madras High Courts have created INTELLECTUAL PROPERTY DIVISIONS for this work.
Two: on post-grant opposition, section 25(4). Within TWELVE MONTHS of the publication of the grant a PERSON INTERESTED may oppose, and the Controller, on the RECOMMENDATION OF AN OPPOSITION BOARD of three examiners and after hearing the parties, may order that the patent be MAINTAINED, AMENDED OR REVOKED. This is revocation by the office rather than by a court.
Three: for atomic energy, section 65. Where the Central Government is satisfied that the invention relates to a subject within section 20(1) of the Atomic Energy Act, 1962, it may direct the Controller to revoke, after giving the patentee an opportunity of being heard.
Four: in the public interest, section 66. Where the Central Government is of opinion that a patent, or the mode in which it is exercised, is MISCHIEVOUS TO THE STATE OR GENERALLY PREJUDICIAL TO THE PUBLIC, it may, after giving the patentee an opportunity to be heard, DECLARE SO BY NOTIFICATION IN THE OFFICIAL GAZETTE, and thereupon the patent is deemed revoked. It is an executive power, rarely used, and drastic.
Five: for non-working, section 85. Where a COMPULSORY LICENCE has been granted, the Central Government or any person interested may, TWO YEARS after the order granting the first such licence, apply to the Controller to revoke the patent on the ground that it has not been WORKED IN INDIA, that the reasonable requirements of the public are unsatisfied, or that it is not available at a REASONABLY AFFORDABLE PRICE. The Controller must decide within ONE YEAR. Note the sequence: revocation for non-working cannot be the first step.
Revocation for obviousness and prior use. Bishwanath Prasad Radhey Shyam v. Hindustan Metal Industries, (1979) 2 SCC 511. A patent for a device for manufacturing utensils was revoked. The method of holding the utensil body on a lathe had been in use among craftsmen before the priority date, so the invention lacked NOVELTY, and the alleged improvement was a mere WORKSHOP IMPROVEMENT within the reach of any skilled workman, so it lacked an INVENTIVE STEP. The Supreme Court also warned against judging obviousness with HINDSIGHT.
Revocation refused, and the counterclaim route. F. Hoffmann-La Roche Ltd v. Cipla Ltd, 2015 SCC OnLine Del 13619, Division Bench, 27 November 2015. Roche and OSI Pharmaceuticals sued on the patent over erlotinib and Cipla counterclaimed for revocation for obviousness, under section 3(d) and for non-disclosure under section 8. Every ground failed, the patent was upheld as VALID and found INFRINGED, though no injunction was granted because the term was nearly spent. The case shows that a counterclaim puts the whole patent in issue and that a patentee who sues must be ready to defend his grant.
Revocation not to be ordered summarily. Monsanto Technology LLC v. Nuziveedu Seeds Ltd, (2019) 3 SCC 381. A Division Bench had revoked a Bt cotton patent under section 3(j) in an interlocutory proceeding. The Supreme Court set that aside, restored the single judge's interim arrangement and remitted the matter, holding that patentability under section 3(j) required a TRIAL and could not be decided summarily.
The patent is gone as against the world. Revocation is not a decision inter partes. Once the patent is revoked the monopoly disappears against everybody, the register is rectified, and any suit pending on it fails.
Licensees. A licence is a permission to do what would otherwise infringe. When the patent ends there is nothing left to permit, so the licence is spent; whether ROYALTIES ALREADY PAID are recoverable depends on the contract and on whether the licensee in fact enjoyed the exclusivity he bargained for while the patent stood. This is one reason section 63 requires notice to every registered interest before a surrender is accepted.
No restoration. SECTIONS 60 TO 62 allow a lapsed patent to be restored where the failure to pay a renewal fee was UNINTENTIONAL. There is no equivalent for a revoked or surrendered patent: it cannot be revived, and the invention is in the PUBLIC DOMAIN.
Third parties who relied. On restoration after a lapse, section 62 protects a person who began to work the invention while the patent was void. After a revocation no such protection is needed, because there was never a valid monopoly to infringe.
And a partial outcome is possible. On a post-grant opposition the Controller may under section 25(4) order that the patent be AMENDED rather than revoked, and in a revocation proceeding SECTION 58 allows the HIGH COURT to permit the patentee to amend his complete specification on such terms as to costs and advertisement as it thinks fit. A patentee who has over-claimed may therefore save the part that is genuinely his, which is often what the litigation is really about.
| Initiated by | Decided by | Effect | |
|---|---|---|---|
| EXPIRY, section 53 | Nobody; the term runs out | Automatic | The invention enters the PUBLIC DOMAIN |
| LAPSE, section 53(2) | Non-payment of a renewal fee | Automatic | The patent CEASES, but RESTORATION is possible within eighteen months under sections 60 to 62 |
| SURRENDER, section 63 | The PATENTEE | The Controller, after notice to interested persons and any opposition | The patent is REVOKED by order |
| REVOCATION, sections 64, 65, 66, 85 and 25(4) | A person interested, a defendant, or the Central Government | The HIGH COURT, the Controller or the Central Government | The patent is cancelled as WRONGLY GRANTED |
Conclusion. SURRENDER under SECTION 63 is offered by the patentee at any time by notice to the Controller, who publishes it and notifies every registered interest, and who may accept it and BY ORDER REVOKE THE PATENT after hearing the patentee and any PERSON INTERESTED who opposes. REVOCATION has five routes: on PETITION OR COUNTERCLAIM under SECTION 64, now in the HIGH COURT following the abolition of the Appellate Board by the Tribunals Reforms Act, 2021, on the seventeen grounds in section 64(1); on POST-GRANT OPPOSITION under section 25(4) by the Controller on an Opposition Board's recommendation; by the CENTRAL GOVERNMENT under section 65 for ATOMIC ENERGY and under section 66 where the patent is MISCHIEVOUS TO THE STATE OR GENERALLY PREJUDICIAL TO THE PUBLIC; and by the Controller under section 85 for NON-WORKING two years after the first compulsory licence. Bishwanath Prasad Radhey Shyam v. Hindustan Metal Industries illustrates revocation for obviousness and prior use, F. Hoffmann-La Roche Ltd v. Cipla Ltd a counterclaim that failed, and Monsanto Technology LLC v. Nuziveedu Seeds Ltd that revocation cannot be ordered summarily.
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