The Patents Act, 1970 is the primary legislation governing patents in India. It provides for the grant of patents for inventions, the rights and obligations of patentees, and the procedures for patent application, examination, and opposition.

The term of a patent in India is 20 years from the date of filing the patent application. This period can be extended in certain cases, such as when the patent is for a pharmaceutical product or when the patentee has been delayed in obtaining a patent due to circumstances beyond their control.

Individuals, companies, universities, and research institutions can all apply for patents in India. The applicant must be the true and first inventor of the invention or their legal representative.

To obtain a patent in India, an invention must be new, involve an inventive step, and be capable of industrial application. Novelty means that the invention must not have been previously disclosed to the public in India or elsewhere. Inventive step means that the invention must not be obvious to a person skilled in the art. Industrial application means that the invention must be capable of being made or used in an industry.

The procedure for obtaining a patent in India involves filing a patent application with the Indian Patent Office, waiting for the application to be examined, and responding to any objections raised by the examiner. The application must include a detailed description of the invention, claims defining the scope of the invention, and drawings or other illustrations. The examiner will review the application to determine whether it meets the requirements for patentability. If the examiner finds any objections, they will issue an examination report. The applicant must then respond to the objections and make any necessary amendments to the application.

A patentee in India has the exclusive right to make, use, sell, and import the patented invention. They also have the right to assign or license the patent to others. If someone infringes the patent, the patentee can sue for infringement and seek damages or an injunction to stop the infringement.

A patent application in India can be opposed on the grounds of lack of novelty, lack of inventive step, or lack of industrial application. An opposition can also be filed if the application does not comply with the formal requirements of the Patents Act or the Patent Rules.

The Controller General of Patents, Designs, and Trade Marks is the head of the Indian Patent Office. They are responsible for granting patents, examining patent applications, and hearing oppositions to patent applications. They also have the power to make rules and regulations relating to patents.

The Patent Cooperation Treaty (PCT) is an international treaty that allows applicants to file a single patent application for multiple countries. This simplifies the process of obtaining patents in multiple countries and reduces the costs associated with filing separate applications in each country.

The Paris Convention for the Protection of Industrial Property is an international treaty that establishes minimum standards for the protection of patents, trademarks, industrial designs, and other forms of intellectual property. It also provides for national treatment of foreign nationals and a right of priority for patent applications.

The Budapest Treaty on the International Recognition of the Deposit of Microorganisms for the Purposes of Patent Procedure is a treaty that establishes a global system for the deposit of microorganisms. This system allows applicants to deposit microorganisms with a single international depositary authority, which then makes the microorganisms available to other researchers and patent examiners.

The World Intellectual Property Organization (WIPO) is a specialized agency of the United Nations that deals with intellectual property. It is responsible for administering a number of international treaties on intellectual property, including the Paris Convention, the Berne Convention, and the Patent Cooperation Treaty.

The Intellectual Property Appellate Board (IPAB) is a quasi-judicial body that hears appeals from decisions of the Controller General of Patents, Designs, and Trade Marks. It is also responsible for hearing appeals from decisions of the Registrar of Trade Marks and the Registrar of Copyrights.

The remedies available for infringement of a patent in India include damages, injunctions, and an account of profits. Damages are a monetary award that compensates the patentee for the losses they have suffered as a result of the infringement. Injunctions are court orders that prevent the infringer from continuing to infringe the patent. An account of profits requires the infringer to pay the patentee the profits that they have made from the infringement.

The term of a design patent in India is 10 years from the date of registration of the design.