Chadha & Chadha Intellectual Property Law Firm

IAM Research

The Patent 1000 focuses exclusively on patent practice and has firmly established itself as the definitive 'go-to' resource for those seeking world-class legal patent expertise.

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“Chadha & Chadha does an excellent job of making sure our work product meets all relevant Indian standards, without letting these requirements overwhelm the content as a whole. The attorneys I interact with are very responsive and a pleasure to work with. They can be relied on for knowledgeable advice and excellent results in patent office hearings”, says a market source. Boasting an impressive grant rate of 98%, Chadha & Chadha is a force to be reckoned with in patent prosecution. The diverse team of almost 50 practitioners – many of whom have master’s, PhDs, FICPI-SEAD and EURO-SEAD qualifications – seamlessly blends legal, technical and business acumen to produce practical, clear, comprehensive solutions, often in complex fields such as artificial intelIigence, telecoms, medical devices and pharma. Seasoned Chetan Chadha is a strategically minded all-rounder with over two decades of experience. On the contentious front he routinely represents major companies in courtroom battles and enforcement initiatives. When it comes to non-contentious matters, he has a strong reputation for his ingenious solutions in complex fields such as LEDs, image processing and the Internet of Things (IoT), as well as his 5G patent drafting prowess. Heading the enforcement and prosecution practice is cosmopolitan Tarun Gandhi, whose profound knowledge of patent and competition law allows him to dispense holistic, astute advice, to excellent results. He is also adept at drafting fintech applications for marquee brands. “His strong communication and analytical skills make Tarun a pleasure to work with. He is very capable and experienced.” Life sciences leader Shivarpita Nailwal’s brilliant, strategically sound advice on portfolio management, as well as her drafting and filing skills, honed over the past 16 years, make her a popular choice among Fortune 500 companies. She recently assisted US technology company Viavi Solutions in overcoming office actions. Debuting in the IAM Patent 1000 2023 is another biotechnology and life sciences maven, Nidhi Anand, who prosecutes and advises clients of all shapes and sizes, from the offices in Bangalore and Hyderabad. She recently helped Samsung Electronics to overcome an office action. “Nidhi is very responsive and helpful. She has rich knowledge about Indian patent practice, particularly the patentability of pharmaceuticals.”

Firm Profile

Chadha & Chadha Intellectual Property Law Firm is headquartered in Gurgaon and has 10 offices across India – in Ahmedabad, Bangalore, Chennai, Cochin, Hyderabad, Kolkata, Mumbai, New Delhi and Pune. Led by 13 partners, the firm’s team comprises 120 people, including 35 attorneys at law and 30 patent attorneys and engineers. Chadha & Chadha is committed to providing high-quality work, being responsive and taking a client-centric and practical approach.

The firm traces its history back to 1967; it has evolved over more than five decades to become one of India’s most prominent IP firms.

The firm specialises in patent law in various industries and technologies, including automobile and auto components, mechanical and machinery, electronics and electrical, telecom and communications, software and information technology, biotech and life sciences, pharma and healthcare, medical devices, material sciences, metallurgy, food and beverages, and sports equipment.

Chadha & Chadha stands for the highest quality of work in all aspects of intellectual property, including trademarks, copyright, design, plant varieties, geographical indications, emerging IP rights, enforcement and anti-counterfeiting, licensing, customs actions and domain names.

Our strengths and qualities

Our success is attributed to a diverse and skilled team of patent professionals who bring expertise to the key technical areas. Most of our professionals have dual qualifications in technology and law. Our team includes qualified Indian patent agents, advocates registered with their respective State Bar Council and the former assistant controller of patents at the Indian Patent Office.

Our professionals’ academic qualifications include bachelor’s and master’s degrees and, in some cases, PhDs. Many of our team members have undertaken international training programmes such as the FICPI-SEAD (the southeast Asian drafting course of the International Federation of Intellectual Property Attorneys) and EURO-SEAD, its European equivalent, which gives them a very good understanding of current international practices.


Much of the firm’s patent work involves cutting-edge technologies and complex legal issues, including in the areas of computer-related inventions, artificial intelligence, Internet of Things, fintech, telecoms, chemicals, pharmaceuticals and medical devices.

The firm represents clients before various forums in India, including before the Indian Patent Office and Courts at all levels. The firm also provides advisory services on cross-border IP disputes.


The firm proudly represents clients that are among the Fortune 500, Fortune Global 2000, FTSE 100, FTSE 250 and Forbes Global 2000 lists, including a client listed in third position on Forbes’ World’s Most Valuable Brands (patents).

The range of clients varies from large companies, mid-sized corporations, academic institutions and research departments to spin-offs and start-ups.

Diversity and inclusion

Chadha & Chadha’s team is diverse, with a large proportion of women in the leadership. We promote professional management to ensure the best interests of clients and encourage initiatives from staff at all levels.

Diversity and inclusion form an integral part of our organisational DNA. Our initiatives such as a gender-neutral sexual harassment policy, strong professional development opportunities, on-the-job leadership training and flexible work schedules are aimed at reaffirming our strong commitment to building an inclusive culture in the firm. As a result of continued efforts in the last decade, Chadha & Chadha has seen a 60% increased share of women on the leadership board.

It makes us even prouder that most of these women began their careers at the firm and rose through the ranks, benefitting from Chadha & Chadha’s structured mentorship programme and its commitment to supporting women in achieving maximum potential at work.

Awards and accolades

Chadha & Chadha has been consistently ranked highly in India by various legal directories, including in Tier 1 for patents, trademarks and copyright by Asian Legal Business IP 2022 and Tier 2 for intellectual Property by The Legal 500 2022.

We have also been consistently recommended for patent prosecution by the IAM Patent 1000 and for enforcement and litigation, as well as for prosecution and strategy, by the WTR 1000.

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