Markush patent US2,014,143 Example 2
A Chemical structure may span from a defined exact structure, a family of structures to a Markush structure.
A markush structure includes several possible variations at various positions of the chemical structure, in turn claiming several specific chemical compounds with closely related properties and often bioequivalence. A family of structures may include compounds and their pharmaceutically acceptable salts, copolymers with common monomers, or a compound with a charge.
Here is an example of the first few Markush structures by “Eugene Markush” who is the first inventor to use such claims in a U.S. patent with successful grants. His other patents include US 1,506,316; US 1,982,681; US 1,986,276; US 2,014,143 in the period 1920s to 1930s.
Claim 12 of US 2,014,143
Filed on May 17, 1930, and patented on September 10, 1935 to “Eugene Markush”
Free Chemical Structure Search
Some databases that provide FREE Chemical structure search options helpful in preliminary evaluation of your Chemical structure.
Complete Chemical Structure Search
Our chemical structure search strategically attempts to discover your structure in any patent or non-patent literature data that is available on the earth in any form or any format. We do this through STN platform by using CAS’ ‘REGISTRY’, and ‘CAPLUS’, as well as the CAS Markush database ‘MARPAT’ that contains keys to substances in patents that may not be available in REGISTRY – above all, we delve it deep the big way.
Our team of Chemistry and Pharmaceutical experts assist you in determining the novelty and validity of a chemical structure in a patent claim by conducting chemical structure searches in high end structure search databases that include chemical structures claimed, disclosed in a patent, or a non-patent literature document as scientific journals. We not only conduct in-depth analysis of the structures to identify similar compounds, but also we craft your Markush structure searching in a way to keep the cost to the search to the minimum – passing on the cost advantage to you.
- 4000+ Patent and NPL searches
- 15+ Years individual expertise
- 300+ Years of combined experience
- Industry experts, Masters, PhDs
- Fastest turnaround
- Experts in STN for structure searching
- Accurate estimation
- Data access free from language barriers
- Multidisciplinary coordination
- Customizable reports
- World’s leading databases
- Project allotted to the best suiting analyst
- Nine layer quality check
- Assured quality: Highest standard
- Informative, yet time saving reports