Although there are examples in this article of clearly scam patents being thrown out, please remember that there are likely examples of the opposite where clearly valid patents get thrown out without a court case, and more where it was unclear which way the patent office should go.
Overall, this alternative system to challenge patents weakens patents as it is indented to. Especially in software patents this is may be a good thing to many, but it is clear to see that this system has probably resulted in some valid patents not being filed as their inventors lack faith that a patent will prevent uncompensated ip theft, and it gets hidden instead.
Although there are examples in this article of clearly scam patents being thrown out, please remember that there are likely examples of the opposite where clearly valid patents get thrown out without a court case, and more where it was unclear which way the patent office should go.
Overall, this alternative system to challenge patents weakens patents as it is indented to. Especially in software patents this is may be a good thing to many, but it is clear to see that this system has probably resulted in some valid patents not being filed as their inventors lack faith that a patent will prevent uncompensated ip theft, and it gets hidden instead.