Suppose a granted patent has four claims A,B,C and D. Can someone do what the patent teaches using only A,B and C only without infringing the issued patent? Ashok Mathur

1 Answer 1


Patent claims are numbered. So if a patent has claims 1, 2, 3 and 4, you can infringe on the patent if you practice even just one of the claims. However, a claim might have multiple steps in it. So if claim 1 has step a, b, c and d, you need to practice each and every step to infringe on that claim.

  • Dear Eric I find your answer very satisfactory. Commented Mar 26, 2017 at 16:51
  • @AshokChandMathur Thanks. It would be great if you accept my answer by clicking the check mark.
    – Eric S
    Commented Mar 26, 2017 at 17:14

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