Patents [CAP. 400 Section 18. Refusal of application in certain cases 19. Powers of Registrar if specification or application defective 20. Lapsing of applications 21. Acceptance and publication of complete specification 22. Opposition to grant of patent 23. Substitution.of applicants 24. Provisions for secrecy of certain inventions PARTY GRANT. EFFECT AND TERM OF PATENT 25. Grant and sealing of patent 26. Amendment of patent granted to deceased applicant 27. Date of patent 28. Extent. effect and form of patent 29. Term of patent 30. Extension of patent 31. Patents of addition 32. Renewal of patents 33. Restoration of lapsed patents 34. Protective provisions to be inserted in order for restoration of patent 35. Endorsement of patent "licences of right" 36. Cancellation of endorsement made under section 35 37. Compulsory licence in case of abuse or insufficient use of patent rights 38. Inventions relating to food or certain other commodities 39. Supplementary provisions as to licences 40. Use of patented inventions for services of the State 41. Special provisions as to State use during emergency 42. Reference of disputes as to State use PARTYI SPECIAL PROVISIONS RELATING TO SPECIFICATIONS, ANTICIPATION AND RIGHTS IN INVENTIONS 43. Amendment of specification by Registrar 44. Amendment of specification with leave of High Court 3