Markush Structure Analysis

Markush structures are found in chemical and pharmaceutical patents wherein the patentees broaden the scope of their patented structures. In chemical patent examinations, Markush Structure Analysis consumes the immense resources. To facilitate inventors, attorneys and other stakeholders with their core business, professionals have undertaken this tedious job of Markush Structure Analysis. The professionals study a vast number of Markush Structures to deliver the necessary analysis.

The patent researchers team at MentesoIP is proficient in life-sciences and biochemistry principles to collect, analyze and interpret these Markush Structures and deliver the highest value to the clients.

Why MentesoIP?

  • 8+ Years of Business, 150+ Full Time Searchers, 50+ Tech Areas, 25+ Markush Structure Searches/month.
  • Experienced chemical patent searchers efficiently identify/search complex structure compounds and have complete access to the fast-growing number of chemical structures disclosed in patents.
  • Multiple variants to match your budget and completeness requirements.
  • Searches and manual analysis conducted by subject matter experts, reports include expert comments on each identified structure.
  • Quick turnaround to secure the earliest priority date.


What is Markush Structure?

A Markush structure is a representation of chemical structure used to indicate a group of associated chemical compounds. They are generally used in chemistry texts and patent claims. Markush structures are depicted with multiple independently variable groups, such as R groups in which a side chain can have a varying structure.

How Markush Structure Patents started?

Markush structures got the name from Eugene A. Markush, founder of the Pharma Chemical Corporation in New Jersey, USA. He was involved in a legal proceeding that set an example for generic chemical structure patent filing. The patent filing was US Application 1,506,316, filed January 9, 1923. Markush was awarded a patent from the US Patent Office for “Pyrazolone Dye and Process of Making the Same” on August 26, 1924.

What strategy is followed for filing Markush Structures?

The company which files the patent makes a general claim for the usage of the molecule without revealing to their competitors the specific molecule for which they are declaring a useful application.

Are Markush Claims important?

Importance of Markush Claims can be established by the fact that between 1994 and 2013, 3,704,996 chemical structure patents were filed, and out of these patents, 468,262 patents contained Markush Claims. Thus, these are so important that every eighth patent includes a Markush Claim.

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