A father of a minimum of 550 kids has been banned from donating any extra of his sperm after he "deliberately lied" to potential dad and mom.

National tips within the Netherlands say sperm donors are allowed to father a most of 25 kids with 12 moms.

The prolific donor, recognized solely as Jonathan M below Dutch privateness guidelines, supplied sperm to a number of Dutch fertility clinics, a facility in Denmark and other people he met by way of ads and on-line boards, the Hague District Court mentioned in a written judgement.

His lawyer mentioned his consumer wished to assist individuals who would in any other case be unable to conceive.

But the decide who heard the civil case mentioned the donor "deliberately lied about this in order to persuade the parents to take him as a donor," in accordance with a press release from the court docket.

The court docket added the dad and mom of the youngsters are "now confronted with the fact that the children in their family are part of a huge kinship network. with hundreds of half-siblings, which they did not choose".

This "has or could possibly have negative psychosocial consequences for the children," it mentioned.

It added: "It is therefore in their interest that this kinship network is not extended any further."

The case was about "conflicting fundamental rights," the court docket's assertion mentioned.

"On the one hand, the right to respect for the privacy of the parents and the donor children... and on the other hand, the same right of the donor," it added.

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The court docket dominated that "the interests of the donor children and their parents outweigh the interest of the donor in continuing to donate sperm to new prospective parents".

The injunction was sought by the mom of a kid conceived with the donor's sperm and a basis representing different dad and mom.

It was handed down by a Dutch court docket on Friday.

The mom, recognized by the inspiration solely as Eva, mentioned: "I hope this ruling leads to a ban on mass donation and spreads like an oil slick to other countries.

"We should stand hand in hand round our youngsters and shield them towards this injustice."

The donor faces a €100,000 (£88,115) fine per case if he breaches his ban.

Lawyer Mark de Hek called the ruling a "clear sign and, so far as I'm involved, a last warning to different mass donors".