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Sergey Kalachev

Sergey Kalachev
Russian Patent Attorney Eurasian Patent Attorney
Deputy Head of Сhemical & Life Sciences Department
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  • D. Mendeleyev University of Chemical Technology (1999–2005)
  • Russian State Academy of Intellectual Property (2008–2011)


  • Russian Patent Office (2005–2008)
  • Scientific and Technical Center "Tonkie tekhnologii" (2008–2009)
  • Isonica (2009–2012)
  • Gorodissky and Partners since 2012


  • Russian
  • English
  • Patents in the field of:
    • Crude oil and natural gas
    • Extraction of oil from shale
    • Drilling for oil, gas and shale
    • Mining and processing of uranium ores
    • Mining and processing of iron ores
    • Mining and processing of non-ferrous ores
    • Mining ores and extracting precious metals
    • Mining and processing of rare metal ores
    • Mining minerals for chemical processing and production of fertilizers
    • Mining precious and semi-precious stones
    • Mining natural abrasives
    • Pulp, paper and paperboard production
    • Production of petrochemicals
    • Production of nuclear materials
    • Chemical production
    • Production of basic chemical products
    • Production of industrial gases
    • Manufacture of basic inorganic chemical products
    • Production of lubricants, additives for lubricants and anti-freeze
    • Manufacture of glass and glass products
    • Manufacture of fiberglass
    • Manufacture of ceramic products
    • Manufacture of refractories
    • Production of basic iron, steel and ferrous alloys
    • Refining precious metals
    • Electrolysis of aluminum
    • Powder metallurgy
    • Surface heat treatment and thermal spraying
    • Chemical sources of power
    • Piezo-electrical crystals
    • Recycling of metallic waste and scrap
    • Recycling of non-ferrous metallic waste and scrap
    • Collection, purification and distribution of water
  • Technical fields:
    • General and non-organic chemistry and technology
    • Physical chemistry
    • Electro chemistry
    • Chemistry of steel and alloy
    • Oil chemistry
    • Crystallography
  • Objects:
    • Methods and technologies of producing non-organic substances, petrochemical and gas processing products
    • Methods and technologies of chemical wastes treatment
    • Compositions for oil wells treatment
    • Glass, ceramic products, alloys, methods of their production and application
    • Compositions for electrochemical production
    • Technologies of crystal synthesis


  • “India's Patent System: Similarities and Differences with the Eurasian Patent System”, (International IP Conference “IIP Eurasia/IP India'23: Innovation Space”, Moscow, December 2023)
  • “India's Patent System: Similarities and Differences with the Russian Patent System”, “Eurasian or National Patent Office - how to make the right choice. Selected applications” (21th Gorodissky annual seminar “IP Protection Strategies for Successful Company Development”, Moscow, September 2023)
  • “Patent Protection Strategies in Russia” (BRICS Intellectual Property Forum “BIPF 2023”, Wuhan, May 2023)
  • “The use in the claims of signs characterizing the intervals of values” (18th Gorodissky annual seminar “IP Protection Strategies for Successful Company Development”, Moscow, October 2020)
  • Participation in technical and legal assessment and preparation of opinions for Russian and foreign companies, operating in the field of production of cosmetics and basic inorganic chemicals on a potential violation of the third parties’ rights.
  • Advising Russian companies, operating in the production of polymers, polymer sorbents, composite polymer materials, oil and gas production, production of petroleum products on obtaining patent protection in Russia, USA, Canada, EU, China, Korea and Japan.
  • Representing interests of foreign and Russian companies in the Russian PTO and the Eurasian Patent Organization when considering objections to the grant of patents for inventions in the field of mining, polymer chemistry and composite materials.
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