1856:Act VI of 1856, modelled on the British Patent Law of 1852, introduces the concept of granting exclusive privileges for new inventions for a period of 14 years. This marks the very beginning of a patent system in India.

1859: The Act XV of 1859 modifies the previous Act, replacing "exclusive privileges" with the term "patent monopolies." It clarifies the rights granted to inventors, allowing them to make, sell, and use their inventions in India or authorize others to do so for 14 years from the date of filing the specification.

1872: The Patents & Designs Protection Act emerges, signifying a separate legal framework for protecting designs alongside inventions.

1883: The Protection of Inventions Act might have been enacted during this period. Further research could confirm its existence and specific provisions.

1888: The legal landscape sees a consolidation with the Inventions & Designs Act, potentially merging the Protection of Inventions Act (if enacted) with design protection measures.

1911: The Indian Patents & Designs Act comes into effect, establishing a more comprehensive and structured patent system in India.

1947: India gains independence, necessitating a review and potential reforms of the existing patent system.

1950: The Indian Patents & Designs Act of 1911 undergoes amendments to better suit the needs of the newly independent nation.

1957: The Justice N. Rajagopala Ayyangar Committee is formed to assess the patent law and recommend revisions for a more robust system.

1970: A landmark year! The Patents Act 1970 replaces the 1911 Act. This Act brings about significant changes:

1999-2005: A series of amendments are made to comply with the Trade-Related Aspects of Intellectual Property Rights (TRIPS) agreement. A major change in 2005 involved extending product patents to all fields of technology, including pharmaceuticals, food, and chemicals.

2002 & 2012-2014: The Act and Rules see further amendments to address evolving technological advancements and international obligations.

Present: The Indian patent system remains active, constantly adapting to the ever-changing globalized knowledge economy. The focus continues to be on fostering innovation and intellectual property protection while balancing public interest considerations.