Beth's Jaguar X-Type changes specification throughout series 1. The Interior often changes from an early car to a later car throughout the the series. Notably the design of the front seat head restraints change design and the steering wheel changes from an all leather rim to a maple wood rim which also features a completely different design of wheel centre.
Casima discovered that they have been patented. Even if this was possible, the patent would end after 15 years like all patents in biology/chemistry. Since they are all over 15 years old, they are also patent free.
In this episode Cosima finds out that the clones are patented. This part of the plot has several errors at the same time. Even if it were possible to get a patent on human cloning (which is in fact NOT possible), a patent is granted for the maximum duration of 20 years. Moreover, a patent would never take away your human rights.... This twist in the last episode makes the whole story completely ridiculous.