HIGH COURT OF DELHI
VIFOR (INTERNATIONAL) LIMITED & ANR. – Appellant
Versus
MSN LABORATORIES PVT LTD & ANR. – Respondent
JUDGMENT
YASHWANT VARMA, J.
| S . No. | Particulars | Paragraph Nos. |
| A. | PREFACE/ BRIEF INTRODUCTION | 1-11 |
| B. ESSENTIAL FACTS | 12-16 |
| C. CONTENTIONS OF VIFOR | 17-61 | |
| D. | SUBMISSIONS OF MSN & DR. REDDY‘S | 62-77 |
| E. ARGUMENTS OF CORONA REMEDIES | 78-82 | |
| F. | INTERVENORS‘ STAND | 83-96 |
| G. | PRIOR INTERIM ORDERS AND OTHER ANCILIARY ISSUES | 97-102 |
| H. | SCOPE OF PRODUCT-BY-PROCESS | 103-143 |
| I. | GRANT AND INFRINGEMENT – DISSIMILAR STANDARDS? | 144-168 |
| J. | SUBSIDARY ISSUES | 169-179 |
| K. EPILOGUE | 180-182 | |
| L. CARDINAL PRINCIPLES | 183 | |
| M. DETERMINATION | 184-185 |
A. PREFACE/ BRIEF INTRODUCTION
1. These appeals have been preferred against the order dated 24 July 2023 passed by a learned Single Judge disposing of the interim injunction applications made in CS(COMM) Nos. 261/2021, 265/2021, 448/2022 & 450/2022 and refusing interim relief in terms as prayed for by the appellant. The present appeals stand restricted to the aforesaid order insofar as it operates upon CS(COMM) Nos. 261/2021, 265/2021 & 448/2022.
2. The appeals raise an issue of significant import, namely, product- by-process claims and their scope as liable to be construed under the provisions of the Patent Act, 1970, [the Act]. The respondents resisted the applications for grant of interlocutory injunction ass
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